[Kyokutou Funamushi (Tokiwa Midori)] Virtual Trip (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.

Bondage (緊縛, kinbaku) is a fetish tag covering restraint and bondage scenarios in doujinshi. This ranges from simple rope bondage to elaborate suspension scenes. The artistic treatment varies from realistic kinbaku (Japanese rope bondage) to stylized fantasy restraints. The tag covers consensual BDSM scenarios as well as non-consensual restraint (when paired with 'rape'). Related tags include 'collar,' 'handcuffs,' and 'femdom.'

FFM threesome indicates a three-person sexual scenario involving two female characters and one male character. This is distinct from MMF (two males, one female) and MMM (three males). The tag helps readers filter for specific group dynamics. It frequently appears alongside 'big breasts,' 'sole male,' and 'yuri.'