Being the son of a rich merchant, Ruca dresses in a rather formal manner. He wears a yellow muffler stuffed into his blue suit, with dark blue trousers and a pair of brown boots. When he obtains a broadsword, he has brown suspenders around his chest to hold the sheath on his back. As he is an honor student, he is intelligent and able to observe and understand situations quickly. However, because of his shyness, he is constantly bullied by his classmates.