Toshikazu Hazamada

A teenage male, Hazamada is initially tall, but later in the story, like Tamami, he shrinks to Koichi's height. In the anime, he is simply depicted as already being short in stature.

He has long, straight dark hair and wears a school uniform with the character "間" along the collar and several belts spread vertically down the chest- mirroring a strait jacket.