(Reitaisai 13) [We are COMING! (Various)] Touhou Ikuikuiku Ikuikuiku Ikuikuiku (Touhou Project)

Big breasts (巨乳, kyonyu) is one of the most iconic body-type tags in doujinshi and manga. It refers to female characters with notably large, exaggerated breasts that often serve as a central visual element. Artists typically emphasize size, weight, jiggle physics, cleavage, and breast-focused activities like paizuri (titjobs) and breast play. This tag spans nearly every genre — from vanilla romance to hardcore fetish content. The artistic treatment varies widely: some artists favor realistic proportions while others push into exaggerated territory. Related body-type tags include 'huge breasts' for extreme cases, 'small breasts' for the opposite aesthetic, and 'paizuri' for breast-focused sexual acts. The tag often appears alongside 'sole female' and 'nakadashi' in heterosexual content.

Futanari (ふたなり) refers to characters with both male and female sexual characteristics — typically female-presenting characters with a penis. This is a significant genre in hentai with its own dedicated audience. The tag covers a wide range from characters with both sets of genitalia to characters who are essentially female with male genitalia. Artistic treatment varies from realistic to highly stylized. Related tags include 'males only' (for futanari-only content) and 'yuri.'

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.