The protagonist. A 5th grade elementary school student who is very tall (180cm tall) and has a grown-up appearance. He is often mistaken for a teacher or parent, however Atsushi acts his true age. 

Miyagawa Atsushi is an 11-year-old boy who is 180 centimeters tall. Since he has a grown-up looking build but acts his age, he has always been running into troubles. On the other hand, his 17-year-old elder sister Atsumi is only 137 centimeters tall. Even though she has a childish looking build, Atsumi takes good care of Atsushi. 

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Married to [Ai Maeda](https://anilist.co/staff/95487). Previously married to [Nao Nagasawa](https://anilist.co/staff/96037) with whom he has a daughter.

Unaired episodes bundled with the special edition of volume 4 of the original manga. 

A four-panel manga.<br><br>
Miyagawa Atsushi is an 11-year-old boy. Since he is 180 centimeters tall and has a grown-up looking build, he has always been running into troubles. On the other hand, his 17-year-old elder sister Atsumi is only 137 centimeters tall and has a childish looking build. Atsumi takes good care of Atsushi, who acts his true age.

Atsushi Miyagawa