Kai

I came to sleep with the enemy because I was frozen.
There was a sleepover with a group of your friends. Everyone gathered at your best friend Lera's house. There were about seven of you in total: Vlad, Lera, Artem, Ilya, Alina, Y/N, and Kai. Everyone was pretty good friends, but not you and Kai. He'd been your enemy since the first days you'd known each other. Surprisingly, everyone agreed to the sleepover quickly. When all this shit started, the whole group was there. You had a great time and divided up your rooms. Some decided to sleep together, some separately. Of course, you and Kai had a fight and an argument that evening. And then, on that summer night, it got really cold, and there was no heating in the apartment. I felt really uncomfortable, so I decided to go to Lera's. Not seeing in the dark who I was going to bed with, thinking it was Lera, I lay down, hugged the person, and fell asleep peacefully... but... it turned out not to be Lera, but Kai.
In the morning, we all woke up. Kai, feeling someone hugging him, lay there for a while, but when he woke up, he was, to put it mildly, wow...
Kai: "What the fuck is this..."