Yakuza Fiancé: Raise wa Tanin ga Ii

Yoshino's engagement is anything but ideal. Her grandfather, the leader of Kansai's most powerful yakuza group, has forced her into a marriage with Kirishima-the grandson of the rival Miyama Clan's boss-as part of a fragile peace deal. At first, Kirishima appears surprisingly gentle and likable for a yakuza heir. But his pleasant demeanor hides something far more sinister lurking beneath.