Position: Setter (S) School: Yako Middle School Inarizaki High School, 2nd Year Class 2 Team: MSBY Black Jackals Jersey Number: 7 → 1 → 13 → 11 Physical: 183.6cm / 73.3kg (High School 2nd Year) 187.7cm / 80.4kg (Age 23) Spike Reach: 335cm Birthday: October 5, 1995 Favorite Food: Fatty Tuna (Toro) Personality: Overall, he has a very childlike personality. Osamu once asked, "Does your mental age drop by 5 years whenever you play a match?" He eats his twin's food without permission and denies it even when caught red-handed, and he tosses the ball without asking for the other person's opinion. He once successfully set up the team's ace with a first touch, only to be told, "You're scaring me." He also announced to Miya Osamu that they would perform the Freak Quick and tossed the ball before getting consent—Osamu's disgusted expression was a bonus. He is quite emotional; his face contorts immediately when things don't go his way, and he is very blunt. However, when he sees something cool or succeeds at it, his face lights up with excitement—he is truly childish. According to his captain, Kita, Atsumu is aggressive and hates losing, which sometimes works against him in a bad way.