This page provides a general overview of some of the more unusual categories utilized in the 16-arenda.ru database. It is important to note that this is how 16-arenda.ru interprets these terminologies and may or may not be consistent with external sources. Regardless, this page is meant to be a reference for the categories found in the database.
| action | incorporates action directly into the main storyline |
| adventure | contains an adventure in the story |
| anime | based on an anime, manga, or light novel |
| bizarre | extreme and unusual situations (usually dark) |
| comedy | explicit humorous tone throughout the manga |
| drama | featuring dramatic progression and emotional effect |
| fantasy | involves magic, a dream world, or fairy tales |
| gore | explicit and excessive bloodshed and violence |
| historic | clearly and obviously based on a time period in the past |
| horror | invokes a feeling of fear or shock |
| medieval | occurs in a medieval setting |
| modern | occurs in a reasonably modern time period |
| myth | references known myths or legends |
| psychological | invokes a mental and emotional disturbance |
| romance | includes a love story (love-making does not equate to romance) |
| school_life | occurs mainly in a school setting featuring students and teachers |
| scifi | contains science fiction elements |
| supernatural | contains supernatural themes |
| video_game | based on a video game |
| visual_novel | based on a visual novel |
| anthology | consisting of various short stories not directly connected |
| bestiality | sexual relations with non-humanoid animals |
| dandere | appearing calm, quiet, and overall emotionless |
| deredere | extreme lovingness/affection |
| deviant | non-vanilla themes that do not have a category listing |
| fully_colored | all story pages are colored |
| furry | featuring anthropomorphic animal characters |
| futanari | female with male sex organs |
| gender_bender | featuring a fantasy gender change of a character |
| guro | explicit and excessive bloodshed and violence |
| harem | multiple females attracted to a single male |
| incest | sexual relations with blood relatives |
| kuudere | initially cynical and cold but later reveals caring side |
| long_story | a single story spanning more than 100 pages |
| netorare | cuckold; stealing heroine from protagonist |
| non-con | non-consensual sex (rape) |
| partly_colored | some story pages are colored |
| reverse_harem | multiple males attracted to a single female |
| ryona | violently assaulted, beaten or tortured |
| short_story | a single story spanning less than 5 pages |
| transgender | voluntary partial or full reversal of gender |
| tsundere | initially combative and irritable but later reveals a caring side |
| uncensored | contains no censorship on private parts |
| vanilla | consensual, heterosexual, happy sex |
| yandere | initially loving and caring but later becomes psychotic or deranged |
| yaoi | males in a homosexual relationship |
| yuri | females in a homosexual relationship (not futanari) |
| amusement_park | sex in a theme park |
| attic | sex in an attic of a building |
| automobile | sex in a wheeled car |
| balcony | sex on a balcony |
| basement | sex in the basement of a building |
| bath | sex in a bath |
| beach | sex on a beach-like setting |
| bedroom | sex in a room with a bed |
| cabin | sex in a cabin |
| castle | sex in a castle |
| cave | sex in a cave-like setting |
| church | sex in a church building |
| classroom | sex in a school classroom |
| deck | sex on the deck of a building |
| dining_room | sex in the dining area of a building |
| doctors | sex in a medical clinic |
| dojo | sex in a Japanese training facility or exercise hall |
| doorway | sex in the doorway of a residence |
| dream | sex in a dream (or dream-like scenario) |
| dressing_room | sex in a dressing room/studio |
| dungeon | sex in a dungeon-like setting |
| elevator | sex in an elevator |
| festival | sex in or during a festival |
| gym | sex in a sports gym |
| haunted_building | sex in a building with potential paranormal activity |
| hospital | sex in a medical hospital |
| hotel | sex in a hotel |
| hot_springs | sex in a natural spring usually used as a vacation spa |
| kitchen | sex in the kitchen of a building where food is prepared |
| laboratory | sex in a sterotypical area for scientific experiments |
| library | sex in a library-like setting |
| living_room | sex in the living room of a house |
| locker_room | sex in a locker room |
| mansion | sex in a mansion |
| office | sex in an office |
| other | a setting not listed |
| outdoor | sex taking place outdoors |
| outer_space | sex in a location outside the Earth's atmosphere |
| park | sex in a park |
| pool | sex in a swimming pool |
| prison | sex in a prison-like setting |
| public | sex in any location that is not private |
| restaurant | sex in a restaurant |
| restroom | sex in a restroom/bathroom |
| roof | sex on top of a building |
| sauna | sex in a room or house with a steam bath |
| school | sex in a education institute |
| school_nurses_office | sex in the nurse's office of a school |
| shower | sex in a shower setting |
| shrine | sex at a shrine |
| storage_room | sex in a storage room |
| store | sex in a store or shop |
| street | sex on the streets or alleyway |
| teachers_lounge | sex in the teacher's lounge of a school |
| theater | sex in the theater |
| tight_space | sex at an area with unusually little volume |
| toilet | sex on the toilet |
| train | sex on a train |
| transit | sex on some sort of public transportation(buses, trains, etc) |
| virtual_reality | sex taking place in a virtual reality |
| warehouse | sex in a warehouse-like setting |
| wilderness | sex in nature away from civilization |
| androphobia | fear of men |
| apron | an apron-like cloth |
| assertive_girl | the female takes initiative sexually |
| bikini | a bikini swimsuit |
| bloomers | type of underpants worn by woman |
| breast_expansion | an immediate increase in the breast size |
| business_suit | outfit for a professional office environment |
| chastity_device | devices such as chastity belts or cock cages |
| chinese_dress | traditional Chinese dress |
| christmas | related to Christmas attire |
| collar | neck piece |
| corset | female wearing corset |
| cosplay_(female) | female wearing roleplaying costumes |
| cosplay_(male) | male wearing roleplaying costumes |
| crossdressing_(female) | female wearing clothing meant for the opposite sex |
| crossdressing_(male) | male wearing clothing meant for the opposite sex |
| eye_patch | a patch meant for the eyes |
| food | involving food in a sexual manner |
| giantess | featuring a female that is large in an exaggerated fashion |
| glasses | eyeglasses |
| gothic_lolita | female wearing gothic lolita fashion |
| gyaru | fashion-conscious girls with tanned skin and blonde hair |
| gynophobia | fear of women |
| high_heels | wearing high heels |
| hot_pants | short, tight shorts that emphasize the buttocks and legs (aka short shorts) |
| impregnation | a female becoming visually pregnant after a sex scene |
| kemonomimi | humans with animal ears |
| kimono | traditional formal Japanese clothing |
| knee_high_socks | long socks that reach near knee level |
| lab_coat | coat for science, medicine, etc. |
| latex | suit made with a rubber-like material |
| leotard | tight-fitting one-piece |
| lingerie | women's underwear and night clothes |
| maid_outfit | an outfit usually made for maids |
| mother_and_daughter | sex with both the mother and daughter |
| none | no fetish |
| nonhuman_girl | featuring female beings that are not human |
| olfactophilia | fetish involving scents |
| pregnant | featuring a visually pregnant female having sex |
| rich_girl | an obviously rich girl |
| school_swimsuit | swimsuits associated with Japanese schools |
| shy_girl | a timid female character |
| sisters | sex with sisters |
| sleeping_girl | sexual activities with a sleeping girl |
| sporty | athletic girl |
| stockings | close-fitting elastic garment over the lower leg |
| strapon | a penis-shaped toy strapped onto the female |
| student_uniform | a uniform for Japanese students |
| swimsuit | any type of swimsuit |
| tanned | darker skin from exposure to the sun |
| tattoo | female with a skin tattoo |
| time_stop | fantasy ability to stop time for sex |
| twins_(coed) | twins with one girl and one boy |
| twins_(female) | twins made up of only girls |
| twins_(male) | twins made up of only boys |
| uniform | costume signifying some kind of authority |
| wedding_dress | a dress meant for weddings |
| alien | an extraterrestrial female |
| android | a humanoid female robot |
| angel | a spiritual being from heaven |
| athlete | an athletic female |
| bride | a female who is participating in the wedding as the bride |
| bunnygirl | a girl in bunny suit |
| cheerleader | a female in a cheer uniform |
| delinquent | a female delinquent character |
| demon | an evil supernatural being |
| doctor | a female medical doctor |
| dominatrix | a mistress in dominant role of BDSM |
| escort | a female prostitute |
| foreigner | a female with features distinctly not from Japan |
| ghost | a visible disembodied soul of a dead person |
| housewife | a housewife |
| idol | a female celebrity |
| magical_girl | a stereotypical anime magical girl with costume |
| maid | a maid-like character |
| mamono | monster girl |
| massagist | a female who massages |
| miko | a Japanese shrine maidens |
| mythical_being | a character originating from a myth or legend |
| neet | young female not in education, employment, or training |
| nekomimi | a human-like girl with cat ears and tail |
| newlywed | a newlywed wife |
| ninja | a female resembling a Japanese ninja |
| normal | a standard female |
| nun | a nun |
| nurse | a nurse-like character |
| office_lady | a stereotypical female who works in the office |
| other | unlisted role |
| police | a policewoman |
| priest | a female priest |
| princess | a royal princess |
| queen | a royal queen |
| school_nurse | a female school nurse |
| scientist | a female scientist/researcher |
| sorcerer | a female magic user |
| student | a female student |
| succubus | a demon that seduces men |
| teacher | a female teacher |
| tomboy | a girl with physical and/or mental characteristics similar to a boy |
| tutor | a female teacher-like figure who tutors smaller groups than a teacher |
| waitress | a waitress who works in a restaurant-like setting |
| warrior | a female warrior |
| witch | a female sorcerer or magician |
| acquaintance | slight knowledge of the female |
| anothers_daughter | another person's daughter |
| anothers_girlfriend | another person's girlfriend |
| anothers_mother | another person's mother |
| anothers_sister | another person's sister |
| anothers_wife | another person's wife |
| aunt | aunt of the male character |
| babysitter | the babysitter of the male character |
| childhood_friend | female friend from childhood |
| classmate | a female from the same school |
| cousin | a female cousin |
| customer | a female customer |
| daughter | daughter of the male character |
| daughter-in-law | the daughter-in-law of the male character |
| employee | worker who works under male boss |
| employer | female boss of the male character |
| enemy | enemy to the male character |
| fiance | female engaged to male character |
| friend | mutual affection towards female |
| friends_daughter | a friend's daughter |
| friends_girlfriend | a friend's girlfriend |
| friends_mother | a friend's mother |
| friends_sister | a friend's sister |
| friends_wife | a friend's wife |
| girlfriend | the girlfriend of the male character |
| landlord | female landlord of the male character |
| manager | female manager of the male character |
| master | female master of the male character |
| mother | mother of the male character |
| mother-in-law | mother-in-law of the male character |
| neighbor | female neighbor of the male character |
| niece | niece of the male character |
| none | only one main character (solo scene) |
| older_sister | older sister of the male character |
| patient | female patient of the male character |
| pet | female pet of the male character |
| physician | female physician of the male character |
| relative | relative of the male character |
| relatives_friend | the female friend of a relatve |
| relatives_girlfriend | the girlfriend of a relative |
| relatives_wife | the wife of a relative |
| servant | female servant of the male character |
| server | female serving the male character |
| sister-in-law | sister-in-law of the male character |
| slave | female sex-slave forced to obey male |
| stepdaughter | stepdaughter of the male character |
| stepmother | stepmother of the male character |
| stepsister | stepsister of the male character |
| stranger | female person of whom the male character does not know |
| student | female student of the male teacher/tutor |
| teacher | female teacher of the male student |
| tutee | female student being tutored by a male character |
| tutor | female tutor of the male character |
| twin | female twin of the male character |
| underclassman | female underclassman of the male character |
| upperclassman | female upperclassman of the male character |
| wife | wife of the male character |
| workmate | a female workmate of the male character |
| younger_sister | younger sister of the male character |
| adult | 20-40 years old |
| animal | an animal (not anthropomorphic) |
| animal_ears | having ears similar to an animal |
| bald | having no hair |
| beard | having a beard |
| dark_skin | having dark skin |
| elderly | older than 60 years old |
| exaggerated_penis | penis larger than humanly possible |
| fat | clearly heavier than the norm |
| furry | anthropomorphic animal features |
| goatee | having a goatee facial hair |
| hairy | having a noticeable amount of body hair |
| half_animal | featuring nonhuman body parts |
| horns | having horns on the head |
| large_penis | penis larger than hentai average |
| long_hair | hair longer than average |
| middle_age | 40-60 years old |
| monster | many monster-like features |
| muscular | being more muscular than the norm |
| mustache | having a mustache |
| none | no male involved in sex scene |
| short | clearly shorter than the norm |
| short_hair | buzzcut or crewcut |
| skinny | clearly skinnier than the norm |
| small_penis | penis smaller than hentai average |
| tail | having a tail |
| tall | clearly taller than the norm |
| tanned | having tanned skin |
| tan_line | having a visible tan line |
| teenager | 13-19 years old |
| wings | having wings |
| adult | 20-40 years old |
| animal_ears | having ears normally found on an animal |
| bald | having no hair |
| big_butt | having a large bottom |
| chubby | fatter than average |
| dark_skin | having darker skin than the average Japanese female |
| elderly | older than 60 years old |
| elf_ears | pointy ears |
| exaggerated_breasts | breasts larger than humanly possible |
| fat | clearly heavier than the norm |
| furry | anthropomorphic animal features |
| hairy | having body hair (e.g. armpit hair) |
| hair_bun | have hair tied in a bun |
| half_animal | featuring nonhuman body parts |
| halo | having an angel-like halo |
| hime_cut | having a hime cut hairstyle |
| horns | having horns on the head |
| large_breasts | breasts larger than the hentai average |
| long_hair | long hair |
| middle_age | 40-60 years old |
| monster_girl | many monster-like features |
| muscular | having a muscular physique |
| none | no male involved in sex scene |
| pigtails | pigtails hair style |
| ponytail | ponytail hair style |
| short | clearly shorter than the norm |
| short_hair | short hair |
| skinny | clearly skinner than the norm |
| small_breasts | breasts smaller than the hentai average |
| tail | having a tail |
| tall | clearly taller than the norm |
| tanned | having tanned skin |
| tan_line | having a visible tan line |
| teenager | 13-19 years old |
| twintails | twintails hair style |
| wings | having wings |
| adultery | voluntary sexual relations with someone other than one's spouse |
| ahegao | weird face during sex; mouth open, eyes rolled back |
| anal_(female) | insertion into the female anus |
| anal_(male) | insertion into the male anus |
| aphrodisiac | drug stimulating sexual drives |
| armpit_sex | using the female armpit for sexual activities |
| asphyxiation | sexual pleasure from cutting of oxygen (e.g. choking) |
| blackmail | involving sex as a result of pressure through threats |
| blowjob | fellatio, oral sex performed on penis |
| bondage | use of restraints for sexual pleasure |
| breast_feeding | feeding and drinking breastmilk to a non-infant |
| breast_sucking | sucking on the breasts with the mouth |
| bukkake | large amounts of semen (from multiple partners) on top of the body |
| cheating_(female) | female having voluntary sex with someone other than her lover |
| cheating_(male) | male having voluntary sex with someone other than his lover |
| chikan | heavy groping in crowds (i.e. trains) |
| clothed_sex | sexual activity with clothes on the female |
| consensual | sex where both parties agree to it |
| cunnilingus | use of mouth, tongue, or lips to stimulate female genitals |
| defloration | involving a virgin female |
| discipline | training to develop control, obedience, or a desired trait in the female character by the male character |
| dominance | sexual authority over the female character |
| double_penetration | simultaneous penetration of one person by two people |
| drunk | involving one or more drunk persons |
| enema | introducing liquids into the rectum |
| exhibitionism | deliberately attracting public attention in a sexual manner |
| facesitting | female sitting on another's face for sexual pleasure |
| fingering_(female) | use of fingers to stimulate female genitals |
| fingering_(male) | use of fingers to stimulate the male anus |
| fisting | placing the entire fist into the female genitals |
| footjob | stimulation of the penis with the foot |
| grinding | rubbing genitalia in a sexually suggestive manner |
| groping | touching and/or fondling breasts |
| handjob | stimulation of the penis with the hands |
| humiliation | psychological distress for sexual excitement |
| hypnosis | use of mind control for sexual purposes |
| intercrural | penis placed between thighs of partner in non-penetrative sex |
| interracial_sex | intercourse between humans of (visibly) different ethnic race |
| interspecies_sex | intercourse between clearly different species |
| lactation | excreting fluids from the breast |
| lotion | use of lotion in sexual manner |
| masochism | sexual pleasure of the male from being punished by the female |
| masturbation | sexual stimulation (self) |
| mind_break | brainwashing victim with abusive sexual activity |
| nonhuman | sexual activity involving a nonhuman male |
| orgy | sexual activity with a group of more than four |
| paizuri | stimulation of the penis with female breasts |
| phone_sex | virtual sex through explicit phone conservations |
| props | unorthodox objects not meant for sexual pleasure |
| rape | non-consensual sex with a male as the aggressor |
| reverse_rape | non-consensual sex with a female as the aggressor |
| rimjob | licking another's anus |
| sadism | sexual pleasure of the male from inflicting harm on the female |
| scat | related to feces |
| sex_toys | toys that provide sexual pleasures |
| spanking | physical spanking for sexual purposes |
| squirt | noticeable vaginal fluid during climax |
| submission | sexually subordinate of the male character towards a dominant female partner |
| sumata | non-penetrative sex often used in brothels |
| swingers | trading partners (e.g. girlfriend, wife) for sexual intercourse |
| tentacles | elongated flexible organs |
| voyeurism | spying/peeping during intimate periods |
| watersports | involving urine and/or urination |
| x-ray_blowjob | x-ray depiction of the penis entering the mouth |
| x-ray_sex | x-ray depiction of the penis inserted into either the vagina or anus |
| 69 | oral intercourse with both partners stimulating at the same time |
| acrobat | reverse cowgirl position with the female completely bent back to the male torso |
| arch | butterfly position with the female's waist raised forcing an arch in her back |
| bodyguard | spooning motion in a standing position where both partners are upright |
| butterfly | female laid back with legs raised as male penetrates in upright position |
| cowgirl | male laid back with female in control from a sitting position |
| dancer | standing face-to-face position with female raising one leg |
| deck_chair | butterfly position with female's legs forced into bent position |
| deep_stick | butterfly position with female's legs resting upright on shoulders of male |
| doggy | rear-entry position with female on all fours and male penetrating from behind |
| drill | missionary position where hte female wraps legs around the male's back |
| ex_sex | missionary-like position except reversed so that the face is facing the feet |
| jockey | female laid face down with male penetrating from behind |
| lap_dance | reverse mastery position with female sitting on male's lap |
| leg_glider | butterfly position with female raising one leg against male |
| lotus | mastery position with female wrapping legs and arms around male |
| mastery | face-to-face position with female sitting on male's lap |
| missionary | simple face-to-face position with one partner on back |
| none | no sexual position |
| other | unlisted position |
| pile_driver | butterfly position with female waist raised for downstroke penetration |
| prison_guard | doggy position with the female's wrists (and thus body) being held up by the male |
| reverse_piggyback | standing face-to-face postition with female being carried by male |
| rodeo | cowgirl position with female looking away from male |
| spoons | rear-entry position with both partners lying on side |
| standing | sex positions where both partners are in upright position |
| teaspoons | similar to doggy but with both partners kneeled and upright |
| unusual | exotic and/or unrealistic position |
| victory | butterfly position with the male speading the female's legs into a V shape |
