It's isn't known how he looks without his bandages, but he presumably has black hair, due to his sister having black hair as well as his skin complexion being white. He's currently in an awful physical condition, but he's currently healing.
Not much is known about his personality, but it's shown that he loves and appreciates his sister's care for him. He might not be in the best mental state, seeing as how he wanted Touko to kill him and free him from his pain, but it could've been him over exaggerating.
- His name hasn't been revealed yet.
- He might be in middle school, seeing as how he is Touko's little brother.
- When he heals, he will surely remain devastated by his sister's death.