Ója-san wa šišunki!

Ooya-san wa Shishunki! follows the antics of Chie Satonaka, a middle schooler who is a landlord. Though she appears a little girl, at times, she behaves more like a grandmother, doing all the cleaning, cooking and housework around the apartment. Despite her responsibilities, she still enjoys a normal middle school life with her friends. (Crunchyroll)