Torikago no Marriage

Kanako's father died suddenly, leaving behind a debt large enough to swallow everything his company had built. A man named Shingyouji Souichi—a corporate director and her father's old friend—paid the debt, saved the staff, and took her in as a ward. The arrangement: live in the apartment his two adult sons share. The condition: choose one of them to marry, because whoever she picks will inherit the company. She cannot refuse after what he did. She does not yet understand what kind of arrangement she has actually entered.