Atsumu and Osamu Miya

Osamu appears to be the calmer of the Miya twins with a laid-back and expressionless personality. Despite his outward demeanor, Osamu is highly competitive and gets heated even if it's not obvious on the surface. However, with enough provocation, he gets angry and physical.

Osamu's hair is dyed grey and his bangs are flipped to his left side.

His twin brother, Atsumu, tells him: "Samu"

Atsumu is one of those young men who walk around with a calm and carefree attitude, although he is self-assured. His lazy smile often fools people, whom he likes to provoke and give impromptu compliments. He can be quite arrogant, condescending and even selfish at times.

Atsumu is a young man of average height and a fairly robust body. He stands out for his particular haircut, which is dyed blond with his bangs falling slightly to his right side (unlike his brother Osamu). On the sides and at the nape of his neck, his hair is shaved and he sports what appears to be his natural hair color, which is black. He normally has a serene expression which is influenced by his large, slightly drooping eyes.

His twin brother Osamu calls him "Tsumu"