Yakuza Fiancé: Raise wa Tanin ga Ii

来世は他人がいい

Yoshino Somei grew up as the princess of the Osaka-based Somei yakuza family. When her grandfather strikes a truce with the Tokyo Miyama clan, she is betrothed to its heir, Kirishima, a young man who first appears polite and amiable. His true nature turns out to be far more unsettling, and he develops a fascination with Yoshino's blunt, combative streak. Two high-schoolers bound by an arranged marriage navigate the dangerous world of their crime families.