Teito Hatsukoi Shinjuu

Set during the Showa era, Kaori Yoshino, a 16-year-old girl, marries Earl Tamaki Misono, a young, wealthy man with a bad name. However, despite being an arranged marriage, Kaori finds it hard to stop herself from developing feelings for him when he doesn’t live up to his bad reputation, not to mention the other perks of married life…