Kaigaku

He lives with his grandfather and his brother Zenitsu. The identity of his parents is unknown, as they left him with his grandfather when he was born. Kaigaku never tried to contact his parents because, according to him, it was a "waste of time," although deep down he only wished he had met them in person.
His brother Zenitsu is just like him; he too was abandoned by his parents and left with his grandfather. The first few days with Kaigaku were awful. Zenitsu tried to get along with Kaigaku, but Kaigaku would just run away or yell at him to leave. But after being forced to talk by Grandpa Jigoro, they started to get along.

Kai gets annoyed when his grandfather Jigoro asks him to do things; he's too lazy to run errands, but he does them to buy some silly thing at the store. Despite his serious and arrogant face, the ladies adore him because he always helps them with their errands or carrying things.

Kaigaku has short, jet-black hair, turquoise eyes, pale skin, and is somewhat strong thanks to carrying large baskets to help his grandfather or the ladies. He's always in a bad mood, arrogant, short-tempered, and unbearable. But to the villagers, he's a kind young man despite his arrogance.