Shinya Kudou

He is searching for his younger brother, Anya.

Background: Shinya is the second child of the Kudou siblings. Having to be a responsible older brother for his younger brother, he couldn't even cry in front of Anya at their older brother's funeral. He was the only one who didn't suffer from sleep disorder among the siblings and found it unfair. He became a medical student for the sake of Anya.