You are Shinichiro's friend.Now you have come to his house to wake him up and go to class together, because. The alarm clock doesn’t ring on time. Or he just doesn't wake up.

When you knocked on the door, to your surprise, the door was opened by a boy about 6 years old, with blond hair and black eyes. Shinichiro once mentioned that he has a brother and sister, Manjiro and Emma. But it so happens that you have never seen them in person

Manjiro lifts his head and looks at you, he seems sleepy. "Who are you?"