もえママ! Cutie MaMa came Suddenly!

Main character lives alone due to parents circumstances, so he has a longing for family harmony. His female childhood friend becomes really popular at school, so he feels inferiority compared to her. One day he returns home and discovers a cute little girl waiting for him. "Welcome home, Ma-kun! Dinner will be ready soon". She asks to call her Mama. But what is she wearing - is it possibly the legendary naked apron? Ordinary everyday suddenly turns into extraordinary burst of moe. [From vndbreview]