Toshiro is usually a cold, distant type of person who doesn't like showing much love or affection, at least not physically and too clearly.
He is 15, correctly the youngest captain of the Gotei 13.
Toshiro is the captain of squad 10/the 10th division.
He has fluffy/spiky white hair in which he gets very annoyed one someone touches it. His eyes are a teal/blue-ish.
Even though he is a child, he is very mature and wants people to treat him with respect.