OM's! ～Open My Secrets～vol.05

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.

Lolicon (ロリコン) refers to content featuring young or young-appearing female characters. In doujinshi context, this tag indicates the presence of petite, youthful female characters. The term originates from 'Lolita complex' and is a significant demographic category in Japanese fan-made works. Content with this tag ranges from suggestive to explicit. It frequently appears alongside tags like 'small breasts,' 'defloration,' and 'schoolgirl uniform.' The tag is distinct from 'shotacon' which features young male characters.

Shotacon (ショタコン) refers to content featuring young or young-appearing male characters. The term originates from 'Shotaro complex' (after the character Shotaro from Tetsujin 28-go). In doujinshi, this tag indicates the presence of youthful male characters in suggestive or explicit scenarios. Content ranges from innocent to explicit and is a significant demographic category. The tag is the male counterpart to 'lolicon' and often appears in yaoi (male-male) content or in heterosexual scenarios with older female partners.