Shizuma Aonuma

Оригінальне ім’я: 青沼静馬

A mysterious boy whom Iwamoto encountered in the "Village Where Black Snow Falls" while carrying out an investigation under official orders. He had been living alone inside a stone-walled structure resembling an underground prison until Iwamoto recommended him for admission to Seihō Junior High School. He possesses the ability to secrete a substance similar to an anesthetic from his entire body.