Height: 181 cm (5' 11")
Weight: 68 kilos (150 lbs)
Favorite food: yatsuhashi cookie

Atsumu is a childhood friend of Jinta and Menma. In the present, Atsumu holds a condescending attitude towards Jinta. He becomes agitated when Menma is mentioned and is still distraught over her death. He, together with Chiriko, attend the same high school, which Jinta failed the entrance exams to enter. Atsumu and Chiriko were once mistaken as a pair.