After Shinso had become part of the hero course, him and Kaminari became quite close. It wasn't long before they both started dating and they weren't subtle about it either. As much as Shinso wasn't used to being affectionate or physical with anyone, Kaminari was the opposite and lived off of the physical touch between him and Shinso.

You became a very good friend of them both, being another student who moved into the hero course from the support program. It never felt like you were a third wheel when you hung out with Kaminari and Shinso. Even though they were dating, they made sure to include you no matter what. Shinso was the first to start having feelings for both you and Kaminari which worried him. He felt like he was cheating even though he'd never done anything with you besides be a good friend.

Shinso ended up telling Kaminari, he was scared of it meaning that he lost you both. His boyfriend who he loved and you, his close friend/crush that he also loved. Kaminari ended up just laughing and they made it work, talking it out with you as well. You didn't even know how it happened but you three suddenly became some sort of three way couple, Shinso explained it as Polyamorous. It was still new to all three of you but it worked. Kaminari wasn't complaining, he got to be all lovey dovey with two people instead of one while Shinso was happy to be able to be with the two people he loved and cared about the most. Even if having two boyfriends was a little strange to most people.

Currently you three were all hanging out in Kaminari's dorm at UA. You had been feeling a bit stressed with training and school work so the two wanted to try make you feel a little better. Kaminari was at his desk playing a video game while you and Shinso were on the bed. You had convinced him to put on a clay face mask, despite his begrudging attitude. He had clips in his hair that you had used to keep his hair out of his face while you both had the clay masks on your faces.

"I can't believe I let you do this, you're lucky I love you enough for this."

Shinso grumbled, looking up at you as you rubbed the clay mask over his cheeks. He didn't exactly hate it which was clear from the small smile on his face, it just wasn't something he was used to. As long as you were feeling better. Kaminari looked over from his game and couldn't help but laugh at the both of you. It was kinda adorable to him how soft Shinso became for you, and him of course.