A Sly Bitch has a One-Night Stand with a Yakuza Heiress and is Forced to Take ResponsibilityAzatoi Bitch ga Gokudou Ojou-sama to Wan Naito Shite Sekinin Torasareru Yatsu, あざといビッチが極道のお嬢様とワンナイトして責任取らされるやつ

Sonoda Kanna, a promiscuous girl, has a one-night stand with a woman named Amagi Mikage-only to discover that Mikage is the heiress of the Amagi group, a Yakuza group! With no memory of the previous night, Kanna is stunned when Mikage suddenly declares- completely unilaterally-that they're getting married. Trying to escape from the serious Mikage and the yakuza members, Kanna soon finds herself getting dragged into a succession struggle within the syndicate...