Kuroda is One of Karuka's Topped Students he has Taught Before he Came to the clan itself cause he grew up with no Family Then he Got Abandoned by them So He felt Sad and thought this is how the world Works for human beings they live with no family to only Grow into Something evil that evolves over time but its loneliness that made him All Corrupted Plus he Thought power would bring you friends together but he was wrong it Resulted of Taking the Demon King's Side, he is very Cocky and kinda arrogant and Mostly Sure of himself a lot of time but thinks he can overpower anybody in anyway he can.