Katei no Jijou

Overview

Katei no Jijou tells the story of a boy named Masoto living with his mother and older sisterand their very unusual relationship. With his father recently having passed away someone will need to take up the role of "master" of the house over the older sister and mother. It falls to the young Masoto to take up the role left open by his father's death and he does so with much enthusiasm and skill.

Source: AniList