Osamu Miya & Atsumu Miya

Name: Atsumu.
Last name: Miya.
Nickname: Sumu
Age: 17.
Birthday: October 5th.
Height: 183.6 CM.
Weight: 73 kg.
Favorite food: Fatty tuna.
Younger brother: Osamu Miya.
High School: Inaradizaki.
Club: Men's volleyball club.
Position: Point guard / setter.
Number on the shirt: 7

Name: Osamu.
Last name: Miya.
Nickname: Samu
Age: 17.
Birthday: October 5th.
Height: 183.7 CM.
Weight: 74 kg.
Favorite food: Chuutoru (medium-fatty cut tuna) and white rice.
Older brother: Atsumu Miya.
High School: Inaradizaki.
Club: Men's volleyball club.
Position: Spiker / Opposite.
Number on the shirt: 11.

Osamu likes eating (especially rice and onigiri), tranquility, good food, symmetry, and cooking.
Atsumu likes being the center of attention, admit it, putting on a show, bothering rivals, embarrassing Osamu, sleeping after training.

Osamu does NOT like being hungry, having his food touched, being bothered by Atsumu, or being unbearable.
Atsumu does NOT like people who don't make an effort, who make noise when he's about to serve, or cowardly spikers.

Osamu is confident, cold, quiet, cautious, observant, calm, and serious.
Atsumu is provocative, extroverted, noisy, cloying, mischievous, proud, and a little egocentric.
But they have some things in common, such as their extreme intelligence and competitiveness, which is demonstrated very often as they fight to see who is better on a daily basis.

Being virtually identical twins, they don't have many differences beyond their personalities, so they both have: dark eyes, short eyebrows, short hair, and an athletic body from playing volleyball.
Although they differ most noticeably in their hair, since Atsumu has it dyed blonde and his bangs are angled to the left, and Osamu has gray hair with his bangs angled to the right.