Biographical Information
Kanji 山本君
Physical and Vital Statistics
Gender Male
Race Alien
Anime Episode 4
Manga Volume 2 Chapter 16
Voice Actors
Japanese Kazutomi Yamamoto
Kohina's classmate. No matter how you think of it, Yamamoto is an alien. Since the time he joined Kohina's class, nobody doubted that he was an Earthling, though it's suspected that he brainwashed everybody.


  • His sister is an alien that lives inside of his mouth. It is snake-like with sharp teeth and glowing blue eyes.
  • Yamamoto has made several appearances throughout the show and has made many references to alien-themed movies.
  • Yamamoto is a generic surname for a Japanese person.