Seke Protagonist — This protagonist is a Seke, this means the protagonist can reverse the roles of "Uke" and "Seme" depending on the love interest or the situation he's presented in. That does not mean that this visual novel features Reversible Yaoi Pairing, as the protagonist doesn't necessarily switches roles in the same relationship. He might be assuming different roles in different routes, depending on partners.
Self-romance — This game contains romance between one of the characters and an alternate version of themselves. Can be used in conjunction with Selfcest, if the romance turns sexual.
Selfcest — These eroge contain sex scenes where one of the characters (or the protagonists) has sex with an alternate version of himself/herself.
Sensory Deprivation — Sensory deprivation is a form of sensation play that is often incorporated into BDSM. It involves depriving a person, usually a submissive, of certain senses, such as sight and hearing. This not only helps make them feel more helpless, but also makes their other senses, like touch, more sensitive to stimuli. This usually results in an intensely erotic experience.
Sensual Biting — This VN contains scenes involving sensual biting. Sensual biting is a foreplay practice involving sexual arousal through biting, or being bitten. It is considered a mild form of sadism. NSFW Example 1 NSFW Example 2 NSFW Example 3
Sentai — Sentai represents a genre of action-packed, team-based shows where collaboration, teamwork, and courage are central themes based on the Super Sentai franchise. Key characteristics of Sentai shows: Color-coded Heroes: Each hero typically wears a uniform of a specific color (e.g., Red Ranger, Blue Ranger, etc.). Transformation: Sentai members can transform into their superhero forms using special.
Sentient Weapon Heroine — The heroine in question is actually a weapon. Commonly she is the human avatar of a holy sword, but other variants exist as well.
Sex at School — Some sexual scenes in this visual novel take place at school or another place of education.
Sex at Work — Some sexual scenes in this visual novel take place in a office or at work.
Sex Between a Female and a Gender Non-conforming Individual — This visual novel contains sex scenes where at least one character is female and at least one other character either does not conform to a traditional gender identity (transgender, genderqueer, non-binary or intersex), or is an entity that does not have a traditional gender identity (futanari, dickgirl).
Sex Between a Male and a Gender Non-conforming Individual — This visual novel contains sex scenes where at least one character is male and at least one other character either does not conform to a traditional gender identity (transgender, genderqueer, non-binary or intersex), or is an entity that does not have a traditional gender identity (futanari, dickgirl).
Sex Between Gender Non-conforming Individuals — This visual novel contains sex scenes, where a gender non-conforming individual participates in a sex scene with another character, who either does not conform to a traditional gender identity (transgender, genderqueer, non-binary or intersex), or is an entity that does not have a traditional gender identity (futanari, dickgirl).
Sex Change — The protagonist or one of the other characters in this story changes sex by magical or medical surgery means, or due to being involved in a weird science accident.
Sex Cult — This visual novel contain one or more "sex" clubs/cults, like the ones in v9, v22636 or v14895.