Kaji Daikou no Arbeit wo Hajimetara Gakuen Ichi no Bishoujo no Kazoku ni Kiinirare Chaimashita.

家事代行のアルバイトを始めたら学園一の美少女の家族に気に入られちゃいました。

Harusho Ootsuki lost his parents when he was young, and his grandmother took him in and taught him housework and cooking.