Rikkun, Game Umai ne. Kakkoii ne.
Hentai
A boy who's good at games gets two busty older girls as his disciples! But when he tries to teach them his special techniques, he cannot concentrate because of their sexy bods. They notice that's he's been sneaking peeks… Synopsis via AniList
Ask Tsundoku about it Manga like Rikkun, Game Umai ne. Kakkoii ne.