Kuro  

Black, クロ

The older half of a pair of orphan siblings who reside in an abandoned car under a freeway and safeguard Treasure Town from external threats. Although he's only thirteen, Black is a hardened individual with a more mature outlook on life. He has been forced to grow up due to circumstances beyond his control. His primary objective is to protect the innocence of Whites, who is the younger sibling in their duo. For Black, it's crucial that White feels worthy and maintains hope in the world.