Kaji Daikou no Arubaito wo Hajimetara Gakuen Ichi no Bishoujo no Kazoku ni Kiniirarechaimashita.

During his second year of high school, Haruto Otsuki starts a part-time job in housekeeping during the summer vacation. His first client turns out to be none other than Ayaka Tojo, the most beautiful girl in school! Despite being bewildered by this unexpected turn of events, Haruto continues doing his housekeeping duties. Over time, he becomes well-liked by Ayaka's family and begins regularly visiting her house. From making home-cooked meals that delight Ayaka, to going grocery shopping together like a newlywed couple, and even going on shy movie dates like young lovers, they begin to grow closer by spending these special moments outside of school.