Classmate no Ikemen ga, Uchi no Kaseifu ni Narimashita.

Honoka, a lazy girl who struggles with household chores but maintains a perfect facade at school, starts living alone temporarily when her mother goes on a business trip abroad. The housekeeper her mother arranged for her turns out to be Katsuragi, the handsome top student in her class! After witnessing Hono's clumsy side, he casually proposes, "Won't you be my girlfriend?". This leads to them entering a cohabitation and romantic contract! A love story unfolds between Honoka who desires a boyfriend like him, and a skilled-at-housework guy!

(Source: Kodansha, translated)