Yamamoto-kun (山本君) is a classmate of Kohina Ichimatsu. No matter how you think of it, Yamamoto is an alien.
Personality[]
Although Yamamoto-kun appears to be an alien, he is friendly and interacts with his schoolmates normally.
Etymology[]
The surname Yamamoto means "mountain, hill" (山) (yama) and "base, root, origin, source" (本) (moto).
Yamamoto is a generic surname for a Japanese person.
Trivia[]
Yamamoto-kun's sister is an alien that lives inside of his mouth. It has a snake-like appearance with sharp teeth and glowing blue eyes.
Yamamoto-kun has made several appearances throughout the show and has made many references to alien-themed movies.
Yamamoto-kun looks and behaves very much like an alien, and Kokkuri-san believes him to be one, but Kohina Ichimatsu is convinced that he is a "normal Earthling."
Ever since the time he joined Kohina's class, nobody doubted that he was an Earthling, though it's suspected that he brainwashed everybody.