| age gap | Relationships between characters of significantly different ages. |
| anal | Scenes with anal sex or anal play. |
| aphrodisiac | Use of substances that dramatically increase arousal and desire. |
| body modification | Permanent alterations to a character's body. |
| bondage | Use of restraints such as ropes, chains, cuffs, or similar devices. |
| breeding | Insemination, impregnation, birthing, or other reproduction related scenes. |
| chastity belt | Devices that prevent a person from touching their genitals. |
| corruption | The transformation of a character from innocent and pure to depraved and slutty. |
| cuckquean | A woman who is aroused by the idea of her partner with another person. |
| drama | Romantic tension, emotional conflict, and interpersonal drama. |
| exhibitionism | Public sex, exposure, or performing sexual acts in front of others. |
| fantasy | Fantasy worlds, magic, or non-realistic settings. |
| group sex | Sex involving three or more participants. |
| horror | Extremely dark and terrifying themes. |
| humiliation | Sexual degradation, and embarrassment. |
| incest | Sex and relationships between family members. |
| lactation | Breast milk production and lactation play. |
| lesbian | Sex and relationships between two women. |
| medical | Medical examinations, procedures, and clinical settings. |
| mind break | Complete change or destruction of a character's will or personality. |
| misogyny | Objectification of women and sexist language. |
| monster | Sex with large fantastical creatures. |
| nonconsensual | Sexual scenarios occurring against the consent of a character. |
| oral | Oral sex, including fellatio and cunnilingus. |
| orgasm denial | Preventing or controlling a character's orgasms. |
| pet play | Animal and pet roleplay. |
| religion | Religious themes, references, and figures. |
| spanking | Corporal punishment and impact play. |
| sports | Athletic competition, teams, or sports settings and culture. |
| thriller | Suspenseful and tense scenarios. |
| virgin | Virgin characters and first-time sexual experiences. |