"Pregnant-Hentai" refers to a specific genre within the Hentai (Japanese adult animation) category, where the primary theme revolves around pregnant or expectant mothers. These animations usually depict characters in various stages of pregnancy, from early stages to near birth, with storylines often focusing on the physical and emotional experiences associated with carrying a child. The content can be explicit and may include sexual scenes involving pregnant characters. This type of Hentai is meant for adult audiences who appreciate this particular theme in their erotic anime.