The male protagonist of this article is Genichiro Sanada.
Asked by his classmate to take care of his younger sister, Genichiro Sanada agreed with a dark face, and then began living together with a seventeen-year-old girl.
Why did Mao, a girl who was very shy when they first met, dare to tease him later? What's going on?
Uncle Sanada fell into the trap of Fujibayashi girl step by step.