Rin x Sen: Hakudaku Onna Kyoushi to Yaroudomo

The main character, Urara-chan, finds a job at the women's academy. She leads a quiet and satisfying life and plans to get married soon. However, her fiance suddenly disappears, leaving behind significant debts. A few months later, Yuji appears, demanding repayment of the debt. Unable to repay the money, Urara accepts Yuji's offer and begins working at the men's academy. She has no choice but to agree to this proposal.