| age gap | Relationships or sexual dynamics between characters with a significant difference in age. |
| aphrodisiac | Use of substances that strongly increase arousal or desire. |
| bestiality | Sexual activity with or involving animals. |
| body modification | Permanent or semi-permanent alterations to a character's body. |
| bondage | Use of restraints such as ropes, chains, cuffs, tape, or similar devices to restrict movement. |
| breeding | Focus on insemination, impregnation, pregnancy, birthing, or reproductive themes. |
| chastity | Devices or rules that prevent a character from touching or using their genitals. |
| corruption | The transformation of a character from innocent to sexually depraved or slutty. |
| cuckquean | A woman who is aroused by her partner having sex with someone else. |
| drama | Romantic tension, emotional conflict, and interpersonal drama between characters. |
| exhibitionism | Public sex, exposure, flashing, or performing sexual acts in front of others. |
| fantasy | Fantasy worlds, magic systems, mythical creatures, or non-realistic settings. |
| group sex | Sexual activity involving three or more participants. |
| horror | Dark, frightening, or disturbing themes intended to evoke fear or dread. |
| humiliation | Sexual degradation, embarrassment, or situations designed to shame a character. |
| incest | Sexual activity or romantic/sexual relationships between family members. |
| lactation | Scenes involving breast milk production, milking, nursing, or drinking breast milk. |
| lesbian | Sexual activity or romantic relationships between women. |
| manipulation | Psychological or emotional control where one character selfishly coerces another. |
| medical | Medical examinations, procedures, clinical environments, or doctor/patient dynamics. |
| mindbreak | Complete psychological breakdown or destruction of a character's will or personality. |
| misogyny | Objectification of women, or themes that treat women as inferior or purely sexual objects. |
| monster | Sex involving large fantastical, monstrous, or non-human creatures. |
| nonconsensual | Sexual scenarios that occur without the full, ongoing consent of one or more characters. |
| orgasm denial | Preventing, controlling, or heavily restricting a character's ability to orgasm. |
| pet play | Animal or pet roleplay, including collars, leashes, cages, training, and related dynamics. |
| religion | Religious themes, symbols, figures, institutions, or power dynamics involving faith. |
| spanking | Impact play focused on spanking the ass or pussy, whether for punishment or pleasure. |
| sports | Athletic competition, teams, training, or sports culture and settings. |
| thriller | Suspenseful, high-stakes, or tense scenarios with elements of danger or uncertainty. |
| virgin | Characters who are sexually inexperienced, focusing on first-time sexual experiences. |