A Breakup and a Kiss ~ Bakudeku Mermaid AU

Chapter 1

Katsuki was running along the shore with his orange and black surfboard, he had just gotten into a heated argument with his new ex-boyfriend Kirishima.

[FLASHBACK]
Katsuki returned from his night on the town. He has been doing so for a few weeks now, his boyfriend has always said he spent too much time surfing and being anti-social. He thought that it would be nice for him to go out to meet people every once in a while, so he did just that.

Katsuki turned on the light in his apartment, he stayed out a little later than he should've.
[...]

Katsuki splashed his surfboard into the water aggressively and sniffled, he got on his stomach and started paddling away from the sand. There wasn't any harsh waves at night so he decided to just clear his mind by watching the moonlight in the comfort of the cold, dark waters.

[FLASHBACK CONT.]
Katsuki looked around and finally noticed that Kirishima was sitting in a chair with his legs crossed along with his arms. "...What?" Katsuki asked, confused on why Kirishima looked like he was suspicious of him for something. Which he was.

"Bakugou, where the hell have you been?" Kirishima stood up with his arms still crossed with an angry and disappointed look upon his face.

Katsuki widened his eyes and answered calmly. "I went out with some friends I met a few weeks ago. Why?" Katsuki then folded his arms like Kirishima. "That's bullshit, then what is this?!" Kirishima pulled out a photo of Katsuki with a girl that had brown short hair with rosy cheeks hugging him and a guy with bi-colored hair kissing him on the cheek.

"Where did you get that?" Katsuki tried to reach for the picture, but Kirishima swiped it away.
[...]

Katsuki looked back down at the water to his reflection. He looked like a whole mess, but just this once he didn't even care. He rubbed his eyes to attempt to dry his tears, he then looked back to the water and saw two glowing green eyes staring back at him. Katsuki processed for two seconds. "AHHHHHHHHHHH!!"

Katsuki jumped back and almost fell into the sea below, but a wet hand with huge green webs between each finger grasped his arm tightly. The strange hand slowly brought his body back up onto the board properly.

Katsuki then frantically looked back to the water and the beautiful eyes were still staring at him, filled with innocence and curiosity. "W-What the hell?! Who are you?" Katsuki waited for a response, but the eyes just stared at him.

"Listen, if you're trying to scare me or something this is a fucking shitty time and a shitty attempt!" Katsuki aggressively yelled at the glowing green eyes, but they didn't even blink. Katsuki's eyes then welled with tears, then he started to grit his teeth. "NO ONE EVER LISTENS TO ME! EVER! CAN'T YOU JUST UNDERSTAND?! PLEASE JUST GO!" Katsuki yelled again at the eyes as his salty tears splashed into the water.

This time, the eyes disappeared. Katsuki was breathing heavily from screaming and crying at the same time. Alone again on the sea.

[FLASHBACK CONT.]
"I was DRUNK Kirishima! How the hell was I supposed to know he kissed me on the cheek?!" Kirishima suddenly walked up to Katsuki and slapped him right across his face. "I KNOW you've been texting each other! I SAW it on your fucking PHONE Bakugou!! YOURE A PRIDEFUL ASSHOLE!"

"YOU THINK I ANSWERED THAT HALF N HALF CREEPS MESSAGES?! I TOLD HIM I WAS DATING YOU, ASSHOLE!" Katsuki was livid, Kirishima really just slapped him.
"YEAH RIGHT, SERO TOLD ME OTHERWISE!" Kirishima has definitely been drinking. The smell was all over him. Katsuki could tell that this wouldn't go anywhere.

Katsuki pinched his eyebrows and sighed. "Babe you're just fucking drunk you don't know what you're even saying, you need to drink water and go to be-" "DONT FUCKING TRY TO CHANGE THE SUBJECT! IT DOESN'T MATTER I GOT MY REVENGE ANYWAYS! IVE BEEN FUCKING KAMINARI YOU FUCKING CHEATER!"
[...]