[E☆Roman Koubou (Edogawa Roman)] Kyou wa Kareshi de, Ashita wa Kanojo [Digital]

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.

Sex toys (オナホール, バイブ) is a fetish tag covering the use of various adult toys in doujinshi. This includes vibrators, dildos, fleshlights, and other devices. The tag covers both solo use and use during partnered scenes. Artists often use toys to add variety to scenes or to depict specific fetish scenarios. Related tags include 'masturbation,' 'dildo,' and 'vibrator.'

Cheating (浮気, uwaki) refers to infidelity or adultery in doujinshi narratives. Unlike 'netorare' which focuses on the victim's perspective, 'cheating' can be told from any perspective. The tag covers both emotional and physical infidelity. It frequently appears alongside 'netorare,' 'milf,' and 'married woman.'