Luminescent

Training

Mephisto could've chosen almost any host he wanted bc of his time powers and yet, he chose to be a pretty twink. Therefore, his tail is pretty too.

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Rin had never liked fighting in the streets, but he definitely enjoyed training with Bon. Bon was a fast learner and picked things up easy. He could go back and forth with Rin pretty decently even after just the first week.

By the end of the first month, he knew how he should throw his weight around and how to properly put power behind a punch without throwing off his own balance.

"Hey, what happened to your apprenticeship with Lightning?" Rin wondered. "If you don't mind me asking, of course!" He added hastily. "Don't treat me like a stranger, you can be as nosy as you want." Bon told him, grinning as he blocked Rin's swipe and caught his right hook. Sure, Rin was going easy on him, but it was still so satisfying to let Bon hold him down. Rin had never liked being manhandled before he met Bon.

"He was getting into some super shady shit that I decided I didn't wanna know about or be a part of, so I quit. I've got so much freetime now that I don't know what to do with myself, so I figured I should touch up on physical close combat. And probably get back to being your friend instead of blowing you off to go be Lightning's underling." Bon explained. Rin's heart warmed and he beamed at Bon.

"There's that smile." The older teen said fondly, returning the smile. "Come on, stop going easy on me! Beat me up already!" He challenged. Rin laughed. "Your puny little human bones can't take my hits if I don't hold back, Rooster!" He reminded the boy. "Oh, I'll show you puny human bones!" Bon tackled him to the ground and Rin was too busy laughing to really put up much of a fight.

The bigger teen pinned him to the ground with little to no struggle, laughing along with him. They ended up with Rin laying flat on the ground, Bon on top of him with his face tucked into the crook of Rin's neck. Rin's tail was wrapped around Bon's thigh. It was comfortable and Rin shamelessly basked in the moment before it passed.

Amaimon was right in that Bon might not take well to him and Mephisto also being Rin's lovers. Rin had hope that Bon would be more open to it though. Bon wasn't the kind of guy that just gave up on things he believed in. If he really cared about Rin, he'd either let him go if he couldn't get over Mephisto and Amaimon or he'd learn to live with it and be a part of them.

"You're really warm, you know?" Bon said, the words muffled against Rin's skin. He felt the stubble scrape his neck and shivered, trying not to be too obvious. He thought it might take longer to be such good friends with Bon again, but it felt like they could just pick up right where they left off.

But this time, it felt supercharged with unsaid feelings and potential relationships.

"I'm cold blooded, so my body temp is higher than most because it's constantly trying to keep me at a suitable temperature for whatever environment I'm in. It's like a modified form of Homeostasis." Rin explained. Bon pulled back.

"Woah, really?! Where does the heat come from?" He wondered.

"I steal heat from the climate I'm in. If it's a hot climate, I can take in a lot of heat and store it for later when I'm in a colder environment. And if I get too hot, it pretty much just seeps out into the air around me and makes it hot." He said honestly.

Bon got the context of the last part, Rin could tell by the smirk he had on his face. "I bet that's useful. If you hold it in when it gets too hot, do you overheat?" He asked.

"Depends on how long I hold it in. If I keep it for around a week, it'll just end in me quite literally exploding in blue flames." He recalled the time with Mephisto and blushed.