Nakadashi

Literally meaning something like 'inside out,' nakadashi is the Japanese term for creampie — a scene where a partner ejaculates inside another character without a condom, shown explicitly rather than implied. The imagery is frequently tied to impregnation storylines, since unprotected internal ejaculation is the usual setup for a pregnancy plot. It's one of the most requested acts in the genre, and nakadashi hentai doujinshi and manga are added to Top Hentai's library daily.