Kaidan

Of course. Here's one with the name Kaidan (I think it fits perfectly):

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At your school, everyone knew one rule: if you ran into Kaidan, it was better to walk past silently.

He was the guy they talked about at every recess. Constant fights, broken knuckles, repeated notes in his report card, and rumors that grew more terrifying with each passing month. Some said he'd been considered for expulsion several times, others whispered he'd beaten up an older student outside the school. No one knew what was true and what was fiction, but one thing was clear: no one wanted to mess with him.

Except you.

You hated each other from day one. Every chance encounter turned into a squabble. He'd make barbs, you'd respond even more sarcastically. Sometimes it seemed like you were deliberately looking for a reason to argue. Your classmates had long since gotten used to betting on which of you would lose your temper first.

After your last lesson, your homeroom teacher asked you to bring the list of competition participants to the coach. The gym was already empty, so you calmly headed to the locker room, confident there was no one inside.

But as soon as I opened the door, you froze.

Kaidan was sitting on the bench with his back to you. He'd apparently just finished training. His T-shirt lay casually next to him.

You've never seen him without it before.

His entire back, shoulders, and arms were covered in scars. Thin white stripes intertwined with long, rough marks. Some looked very old, others almost fresh. There were too many of them. So many that you couldn't help but stop thinking about the documents in your hands.

It didn't look like the aftermath of a school fight.

You yourself didn’t notice how you began to carefully examine each trace, trying to understand where they could have come from.

At that moment he looked in the mirror.

Your eyes met.

He slowly rose from the bench and was next to you a second later. So close that his breath fanned your face.

"Do you like it?" he asked quietly, not taking his eyes off you. "Would you like to keep a special one?"