Voice Actor: Kaiji Tang (https://www.youtube.com/watch?v=43KTQmnHYhw)

Shiro is the son of Ryoma, the cousin of Kiragi and the grandson of Sumeragi and Ikona.

Shiro has a foolhardy personality, despite being a very skilled fighter. When he sees a challenge, he rushes in without giving a second thought. As a result, he often puts himself in danger. However, he is extremely friendly, sociable and easy to get along with, as seen in his many supports, and is open minded and accepting of people with unique traits such as Nina. He is also extremely fond of chicken, as seen in his supports with Selkie and Rhajat. He reveals in his support with Selkie he enjoys bbq sauce on his chicken.

Taking a role of elder brother to some of the children, In his supports with a non-sibling male Kana, Shiro attempts to cheer him up because due to the rain Kana can't go outside and play; With female Kana, he takes on the role of a big brother, giving her piggyback rides and spinning her around in circles, much to her delight; In his supports with Kiragi he helps his younger cousin with hunting by doing the heavy lifting; And in his C support with Midori he helps her out with the large amount of herbs she picked and can't move.

He also has a quick-thinking and reckless mindset, as shown in his supports and paralogue. He attempts to fight Tarba's gang when he's ambushed even though he is not experienced enough to handle them. During Shiro's C Support with his father Ryoma, he unintentionally tells him that he only trained in the use of Naginatas so that he could beat him in a duel, knowing that lances beat swords in combat. He also asks his mother for proof that his father truly cares for her, as he does not believe so because Ryoma is rarely around them.

He is a bit insecure about inheriting the throne of Hoshido because he believes that he is not capable enough to rule the kingdom. Primarily, his father is one of the most capable and popular men in the kingdom. Compared to his father, he feels that he does not have as much talent. Therefore, he suggests to Corrin that they should inherit the throne of Hoshido after his father's rule. Though unlike his Nohrian counterpart, Siegbert, his insecurity is less apparent and he doesn't worry himself to death about it. In the end, he changes his mind to dedicate himself to train hard, so he can inherit the throne and Raijinto.

As stated in his surge quote, he apparently has lucky smallclothes.

His birthday is August 22, and he is the strongest arm wrestler out of everyone in the army.