Shu Kurenai

Physical Traits
Shu is quite tall for his age and has white hair and red eyes. In Beyblade Burst, his attire includes a pink shirt with a black tie, a black coat over his shirt, long black pants, and black shoes. His right hand sports a red glove. (Sometimes his left if using control instead of a power launch) He has a scar over his right eye that was cut by Lui in a previous battle which is usually covered by his hair.

Personality
Shu is calm and patient, and prefers to be alone most of the time. He maintains a cool exterior in front of others, however underneath this lies a burning hot fighting spirit. He is quite unfriendly towards people he doesn't know very well. Shu is shown to be a good cook: this is because his parents are often busy and away from home, so he has to do it himself.

Valt Aoi
Valt is Shu 's best friend, whom the former idolizes, and the two have known each other since kindergarten. Valt is continually inspired by the hard-work and focus Shu puts into blading, and continually seeks advice from him. Shu tends to drop his cold front in front of Valt and smiles more easily around him. He's also very protective of Valt and constantly looks out for him. Shu 's faith in Valt is unshakable, and while others may become exasperated with Valt 's empty-headed antics, Shu never stops believing in him. He views Valt as a worthy opponent and rivaly

Toko Aoi and Nika Aoi
Because they are Valt 's younger siblings, Shu also cares about them. In the Japanese version, both siblings refer to Shu as "Shu-kun" despite being younger than him, indicating that they're quite comfortable with each other.

Daigo Kurogami
Shu and Daigo originally only spoke in passing. Shu was the only one to notice that Daigo cheated during his match with Yugo, and saw how the guilt affected him. He approached Daigo privately and offered some words of comfort, even going out of his way to lie to Daigo 's little brother, Ryota, so that Ryota wouldn't see his older brother in a bad light. This spurred a budding friendship between the two. Shu and Daigo seem to get along, most likely because they're both quiet people.

Shu and Valt faced off Spryzen vs Valtryek again IN evolution, The bey red eye owns is SPRIGGAN REQUIEM LAYER COUNTER DISC-00 ZETA

Trivia

 * In Episode 1, Rantaro calls Shu a "spoiled brat".