Leon is a passionate, hot-blooded young teenager. Often slacking off from studying and baseball practice; however, his baseball skills were never diminished due to his status as Ultimate Baseball Star. He was also strongly interested in girls and bragged about his great success with women to Makoto, asking him if he was jealous. When he becomes nervous or intimidated, Leon tended to smile awkwardly. he has also mentioned he's into pure-hearted girls and he was grossed out by Hifumi's behavior.