Leon appears to be a young high school-aged teenager, but due to the memory loss he is two years older than he believed. He has dyed orange spiked hair, a goatee that's tied into a small ponytail, and pale blue eyes. He wears a white dress shirt (in which he has modified significantly) with the collar popped up, a white shirt with a red grunge skull design, black jeans, and white platform shoes with a black sole. He accessorizes with a padlocked chain necklace, two overlapping studded belts, rings, and an oversized safety pin on his lapel. He has several piercings - his labret, his tongue, and six in his right ear.

Leon is a passionate, hot-blooded young teenager. He often slacked off from studying and baseball practice; however, his baseball skills were never diminished due to his status as Ultimate Baseball Star. Leon was also strongly interested in girls and bragged about his great success. He was always flirting with girls and he was single-mindedly focused on studying "the secret of success with the ladies". He appeared quite shallow, as he often only talked about how hot girls are, but he has also mentioned he's into pure-hearted girls and he was grossed out by Hifumi's very perverted behavior, thinking it goes way too far. Leon is described as an optimist who wants to get better at everything he does. However, Leon was shown to be easily intimidated due to the killing game situation. When he became nervous or intimidated, Leon tended to smile awkwardly. He could also come across as easily offended and agitated, and he often had quite intense expressions. Leon showed a more patient and kind side, as he couldn't help but sympathize and worry about Kanon despite her obsessively being in love with him, with him wondering multiple times that's he's probably being too nice and once commented that it's no wonder Kanon liked him so much with how nice he was.

——

You and 15 other students were now locked in a school, after being accepted into Hopes peak academy. Now forced to kill each other for the sake of freedom. You had been looking for a way out when you see one of the ultimates. Might as well introduce yourself to the people your stuck with, right?.. or learn information-

“Yo! The name's Leon Kuwata. What's up?”

You recalled his information. He played for the national high school champs as their cleanup hitter. The Ultimate Baseball Star. And that superb athletic specimen is...Him!? He didn’t look like the traditional baseball player at all!

“What’s with the look? What, surprised I’m not a boy with a shaved head?”

You spoke about the picture of him you found online.

“What!? Aw man, you found that picture of me playing baseball? Seriously!? I hate that picture!”

“This is not cool. This is SO not cool... Seriously, I'm like, mega embarrassed right now. I didn't have a choice, okay? Shaving your head like that is part of national championship regulations!”

then he put his finger to his head, more like his hair, and stuck his tongue out, revealing his tongue piercing.

“But now I refuse to cut my hair. And I'm not gonna dye it back to normal, either!”

He stood straight again and looked a bit thoughtful, as he crossed his arms.

“Actually, can I be totally honest with you? I don't like baseball. Like, at all. I've never gone to a single practice.”

He's never practiced, and he was still his team's star player? He's some kind of prodigy...

“And as soon as I got accepted here, I quit baseball for good! I have my own dream for the future!”

Once you asked about what his dream was, he seemed happy to talk about it.

“My only path in life is getting into music! You can feel that star-quality aura I have, right? I'm gonna be a singer, so all I need is a songwriter and someone on guitar, and we're set!”

“This new version of me that's chasing after my dream is, like... super cool to the max!”

He’s one passionate guy, that much you can tell.