Toriko no Chigiri - Season 1

Based on the erotic game by Guilty eX. Two sisters live a peaceful life under the protection of their grandfather, the head of a yakuza group. This peace is shattered when their grandfather falls seriously ill. Seizing the opportunity, a rival organization begins to apply pressure. The only path to safety and support appears to be a deal with a different yakuza group, which demands one of the sisters in exchange for their aid.