Koutarou Araki is a character in Denpa Kyoushi. He is a truant sophomore in Kagami's class at Ichou Academy and he is a hikkikomori.
Despite being a guy, he resembled his avatar very much, looking like a real girl to those who don't know his identity. During middle school, he tried to walk out of his house wearing girly clothes, but ended up accidentally bumping into and hospitalizing a classmate who discovered his secret hobby and made fun of him. Ever since then he was not only afraid to leave his home, but also to meet other people and question his gender/identity. In the end, Kagami was able to convince Koutarou to reveal his true identity to his classmates after a final match with First (Kagami's character) which ended in his victory. Koutarou has returned to school, and his classmates accepted him as what he really is. He was also given permission to wear a girl's uniform.
Reason For Cross-Dressing
Koutarou always like cute things, and tried crossdressing since he was a little kid.