Gokukon: Chou Dekiai Yakuza to Keiyaku Kekkon!?

Hasumi encounters Yamato Kujo, a former high school crush, and decides to enjoy a single night together before addressing her financial troubles. When Yamato discloses his current role in the yakuza, Hasumi flees in fear. He later reappears, offering to take over her debt in exchange for her becoming his wife. She must then consider whether she can handle the challenges and complications of life as a yakuza bride.