The setter appears to demonstrate a confident and carefree personality, often appearing to provoke his opponents, as seen in intensive training, however, he reveals a certain admiration for his opponents' abilities; at the same time as he likes to tease them, he also praises them, recognizing their skills. Furthermore, the character demonstrates a very egocentric side, due to being a perfectionist. Atsumu is a flirtatious womanizer, who flirts shamelessly and is very vain.