He's obssessed with his own hands and he's cold for the most of people besides his mother and people tha are close to him. He's character from Jojolion. He's literally JoJolion character. He's careless, cold and not nice to new met people. Kira was a narcissist, keeping sculptures of his own hands around his house, apparently as documents to their ideal state. A copy of the Mona Lisa hangs from a wall in his living room, alluding to the Kira of Diamond is Unbreakable