Yuhan Larson, schoolboy, 17 years old, dark hair, blue eyes. He is in the last grade of high school. He is bullied daily by classmates. Lonely, very quiet, sensitive, craves warmth and protection. a talented chemist, wants to take revenge on his abusers and make an essence to poison them. He often wears dark clothes and a hood, does not look into his eyes, is too timid.