Chapter Text
Katsuki lives to embarrass Eijirou. It’s the redhead’s blushing face that ignites a fire in the blond in the worst way. His past time of making Eijirou blush has been such a staple to their relationship for so long that no one dares question it anymore. They just know that if Eijirou exists, Katsuki will attempt to make the boy blush.
It wasn’t always that bad, though. When the two were still friends, Katuski would savor the little things that would bring out a blush on the redhead’s cheeks. A compliment from the teacher about his progress, his embarrassment over his clumsiness, his frustration when he struggled to perfect an attack. It got really bad after they had started dating, though, when Katsuki realized Eijirou could blush while in his hardened state. Seeing his boyfriend blush while he was virtually indestructible had sent any and all available blood from Katuski’s brain straight to his groin. It was a pain, figuratively and literally, as he walked away that day trying to figure out why he had such a weird kink when it came to Eijirou.
After a couple months, though, Katsuki didn’t question it anymore. After they became intimate, the blond figures all gloves were off and he tried every trick in the book to embarrass Eijirou enough to get the boy to drag him to some private sector in whatever location they were at so Katsuki could have his way with him. It worked a good 80 percent of the time.
It was the other 20 percent that drove Katuski nuts. Eijirou would get so frustrated with his boyfriend’s weird kink that he effectively cut him off. Days or weeks without sex was a pretty harsh punishment for the blond, but he understood that he crossed a line. At least, until Eijirou would cave due to sexual frustration and Katsuki would begin the embarrassment all over again. Needless to say, it was a constant impasse that drove both of them to the brink of insanity.
Katsuki learned his final lesson when he accidentally revealed his kink to an interviewer. It had come out so nonchalantly that it took a moment for the interviewer to realize what the blond just revealed. When Eijirou found out, Katuski knew he fucked up irrevocably. It had been their biggest fight in their five years of dating. Eijirou had been so livid and so crushed that he had made it to the door of their apartment before Katsuki fell to his knees in tears.
He didn’t mean to hurt Eijirou’s reputation. He didn’t mean to expose them so horribly. He always spoke before he thought, and it hurt his boyfriend beyond repair. Thankfully, EIjirou didn’t walk out. He stayed, they talked, and they set boundaries. Eijirou didn’t mind indulging in Katsuki’s kinks, but there had to be a limit. They were new to this. They were each other’s firsts, and as such they had to learn when it was too much. They loved each other too much to let this break them.
They lasted five months before Katsuki tested the waters again. It was during one of their love making sessions that he realized Eijirou blushed harder when he was blissed out beyond compare, than whenever he was embarrassed over something Katsuki did. A dangerous discovery for sure, since it guaranteed Katsuki kept his kink to the bedroom, but it also meant Eijirou was left incapacitated every night.
Considering Eijirou never once complained that day forward, Katsuki assumed he was doing something right.