Kaminari had always been fascinated by Ojiro's tail. Whenever it was within grabbing distance, he'd never hesitate to reach out and play with it.

Ojiro didn't mind at all. The first time he felt his tail being touched in this manner, he had been in the middle of speaking with Hagakure. The sudden feeling did make him jolt a bit in surprise, and he looked back at Kaminari for a moment, who was smiling as he pet the hair on the appendage. Ojiro turned back around and merely shrugged before continuing his conversation.

Kirishima had been standing nearby when this occurred, and his mouth opened a bit in shock as he watched the scene unfold. It was so random, and seemed like the sort of thing a young child who didn't know any better might do to a stranger. After several pets of the tail, Kaminari let go and walked over to Kirishima.

"Ready to go?"

"Uh, yeah."

School had just ended, so they headed out of the classroom and to the dorms. Kaminari looked over at his friend as they walked down the first hallway.

"You okay man? You seem a little dazed."

"Huh? Oh, no, I just..." Kirishima hesitated. He didn't want to pry into someone else's business and seem rude. "It's nothing. Just been a long day."

Kaminari seemed fine with that response and didn't question him any further. The two soon parted ways as they each went to their own rooms.

A few weeks had gone by, and Kirishima had forgotten all about the tail incident. He made his way to homeroom one morning, cheerful and ready to begin the new day. As he entered the classroom, he noticed Kaminari was already seated.

"Hey man," Kirishima greeted with a smile as he sat down.

Kaminari turned back in his seat and smiled back. "Hey. How do you think you did on the test?"

"Eh, alright I guess. Bakugou's been helping me study, but that mostly consists of him yelling while hitting me on the head." He chuckled a bit. "What about you?"

Kaminari rolled his eyes. "Terrible. But what else is new?"

"I'm sure you didn't do that bad."

"I guess I'll find out soon." His attention was directed towards the door, which Ojiro had just emerged from. "Mornin' Ojiro!" He waved.

"Good morning Kaminari," he politely replied, walking to his desk.

Soon, the room filled with students, talking among themselves. They quieted down once the bell rang and Aizawa began handing tests back.

Kaminari frowned a bit when he received his. "Well, I didn't expect a good score, but it still kinda sucks." He sighed. "Oh well."

Class continued on, and everything seemed normal for awhile. Then, at some point during note-taking, Kirishima heard a soft giggle. He looked up and saw Kaminari staring at Ojiro's tail, which was hovering in the air above the martial artist's right shoulder.

Kaminari waited a few moments, and then his hand bolted out to tap the mass of hair. He quickly retracted his arm and watched in delight as the tail jerked from side to side several times, before slowing to a slight twitch.

Kirishima raised his eyebrow. Was this really happening? And during a quiet part of class of all times. Aizawa was sure to notice.

But Kaminari didn't seem to have any plans of stopping just yet. He played this strange game of his on and off throughout the rest of the period, miraculously not getting caught once.

When homeroom was over, Ojiro left without a word.

Kirishima and Kaminari walked to their next class together.

"You sure seemed like you were having fun in there," Kirishima stated.

"Oh, you saw that?" Kaminari laughed.

Kirishima nodded. "Yeah. I'm surprised Mr. Aizawa didn't catch you goofing off."

Kaminari gasped. "Goofing off?" He asked in mock offense. "That was important work I did! It was an exercise to help Ojiro strengthen his tail."

Kirishima shook his head in amusement. "Uh huh. Sure."

"His tail is like a cat's when it doesn't want you to mess with it. It's adorable."

'Adorable?' Kirishima frowned a little. "Don't you think that Ojiro might not like you messing with his tail either?"

Kaminari waved his hand dismissively. "Nah, he doesn't mind."

"If you say so..."

It got to the point where Kaminari would play with Ojiro's tail every day. It was part of his routine. The first time would be during homeroom when they were seated. Of course, Ojiro just had to sit in front of Kaminari during class, with Kirishima right behind the two of them, forcing him to witness the daily spectacle.

He would always try to ignore them and focus on his work, but Kaminari's laughter would distract him. He couldn't help the warm feeling in his chest that would develop whenever he heard it. It was the sweetest sound in the world. He only wished that he were the cause of it instead of Ojiro.

The red and yellow duo used to spend so much more time together. But Kaminari and Ojiro had gotten much closer. There were times when the two of them would be alone with one another, and Kirishima would be left with Bakugou, Sero, Ashido, or any combination of the three. Not that he didn't adore them, but he missed his best friend. It felt as if Ojiro had stolen him away.

"What's so great about his tail?" Kirishima pondered one evening as he got ready for bed. "And why does Ojiro have to tolerate Kami's behavior?" He finished drying his hair and lay down, staring up at the ceiling. "I mean, it does stand out, but so do unique features on a lot of other people. Why only Ojiro's tail? What about Shoji's extra arms?"

An image of Kaminari running a hand down one of Shoji's arms came to his mind.

"Your arms are really amazing Shoji." He felt the muscle of one of them. "Wow. You're so strong!" He made sure to test out each arm, admiring all six brawny limbs.

Kirishima rapidly shook his head. "Nope! That's so much worse! Well, what about Sero's tape?"

Another scene began forming.

"Your tape is so cool Sero! I wonder how long it can stretch?" He pulled and pulled on the tape protruding from one arm until it couldn't go any further. Sero suddenly started spinning like a top, completely out of control. His tape enveloped both himself and Kaminari, the two of them tangled up as their foreheads and noses touched.

Kirishima groaned in frustration. "Okay fine! Ojiro's tail is the best source of entertainment!" He sighed. "I wish I was interesting enough to get that kind of attention from Kaminari."

A piece of hair fell onto his eye, and he reached up to move it over. An idea suddenly came to him.

"Hm..."

A/N: This is my first BNHA fanfic, and I'm very excited to contribute some KiriKami!

Pining and jealous Kirishima are two of my favorite things, and this plot revolving around Ojiro's tail was too perfect to pass up.