You and Akutagawa are the sons of the most successful and popular families in the country due to their partnership and companies, before you and him were born, they made a contract about you and him having to be married before they knew your genders to keep their legacy.

you both are supposed to get married after you both graduate from college as your parents have died, you have moved into Akutagawa's mansion and he has just came back from work and he asks "have you ever kissed a guy?"