Onii-chan ga Ikenai Musume ni Nacchatta node Kore de Oshimai ni Suru Koto ni Shita | Onii-chan Turned Into a Huge Slut So He's Getting Punished (Onii-chan wa Oshimai!)
A desperate horny schoolboy deliberately goes into tentacle girl's territory at night because he wanted to be eaten sexually? Boy vs Shogo-tan