[Haniya (Hanini)] Kankin Idol (THE IDOLM@STER CINDERELLA GIRLS)

Anal intercourse is a common sexual act tag in doujinshi. It appears across nearly all genres and demographics, from vanilla romance to extreme fetish content. The artistic depiction ranges from realistic anatomy to highly stylized presentations. This tag frequently co-occurs with tags like 'nakadashi' (internal ejaculation), 'big breasts,' and various body-type tags. Some artists specialize in anal content, developing signature techniques for depicting the act. The tag covers both consensual and non-consensual scenarios depending on accompanying tags.

Double penetration (DP) is a sexual act tag indicating simultaneous penetration of two orifices. In doujinshi, this typically involves vaginal and anal penetration simultaneously. The tag is often found in gangbang or multi-partner scenarios. Artists use various techniques to depict the act, often with emphasis on the character's reaction. Related tags include 'gangbang,' 'anal,' and 'multiple male.'

Impregnation (孕ませ) is a fetish tag focused on the act of getting a character pregnant. This often involves detailed internal views (x-ray) showing ejaculation and fertilization. The tag is closely related to 'nakadashi' and 'pregnancy' but specifically focuses on the conception moment rather than the resulting pregnancy. It's a significant fetish category with its own dedicated audience.