A/N: Since today is National Tickle Day, and since KagamiPINKAgreste is a fan of Kacchako, I figured I'd do this fic for her.
It was just another Friday afternoon in the UA dorms, and Katsuki "Kacchan" Bakugo was rocking out to "Bring Back the Plague" by Cattle Decapitation. He enjoyed death metal, black metal and other such forms of incomprehensibly extreme metal because it appealed to his explosive personality. Ironically, though, he considered thrash metal and speed metal to be too soft for his tastes, though he enjoyed crossover genres such as deathrash and blackened thrash. While he was headbanging, though, he thought he could hear someone knocking on his door, but he ignored it until the knocking became more intense.
"WAIT A MINUTE YA DICK!"
"Hey, I don't have a dick!" said a familiar female voice.
"Pink Cheeks!? AW, SHIT! SORRY!"
Kacchan paused the music and opened the door.
"Hiya, bad boy!"
Ochaco Uraraka glomped Kacchan and gave him a big hug and kiss, which he gladly returned. In the past, he wouldn't have been so inclined toward romance, but ever since the summer camp and Kamino Ward incidents, he'd begun seeing things in a different way. Plus, considering how soft, warm and cuddly she was, how could he resist her? Eventually, they let go.
"Come on in, babe!"
Kacchan stepped aside and let Uraraka in, and he closed the door behind her and sat down on his bed next to her.
"So, Pink Cheeks, what's on your…wait, why the crap are ya gigglin'!?"
Uraraka tried to stifle her giggles as best as she could. "N-no reason!"
"YEAH RIGHT! YOU GOT SOME STUPID-ASS REASON, I CAN TELL!"
"OK, I won't hide it from you anymore! I came to visit you because today is National Tickle Day!"
"What the…AHAHAHAHAHAHAHAHAHAHAHA!"
"Oh, so you ARE ticklish! This is gonna be fun!"
"NO IT'S NOT! AHAHAHAHAHAHAHAHAHAHAHA!"
"But Bakugo, your laughter tells me you're having fun!"
"AHAHAHAHAHAHAHAHAHAHAHA! I SWEAR TO GOD, I'LL…!"
"You'll do nothing but laugh and like it, silly!"
"OK! OK! AHAHAHAHAHAHAHAHAHAHAHA!"
"Wow, you have such a cute laugh, Bakugo!"
"AHAHAHAHAHAHAHAHAHAHAHAHA! I'M NOT CUTE!"
"But you are, you cute boy!"
"AHAHAHAHAHAHAHAHAHAHAHA! STAHP! STAHP!"
"No, I don't feel like stopping!"
"I'M GONNA KILL YA! AHAHAHAHAHAHAHAHAHAHAHAHA!"
"Just for threatening me, I'm gonna make things extra-ticklish!"
"AHAHAHAHAHAHAHAHAHAHAHAHAHAHA! I'M SORRY!"
"Nope, 'sorry' isn't good enough! You have to…HEY!"
"Gotcha!"
"BAKUGO! AHAHAHAHAHAHAHAHAHAHAHA!"
"Yeah, see how ya like it now!"
"LET ME GO! AHAHAHAHAHAHAHAHAHA!"
"Sorry, but I ain't lettin' go until I've had my revenge!"
"AHAHAHAHAHAHAHAHAHAHAHA! OK, I'M SORRY!"
"Hey, if 'sorry' wasn't good enough for ya, it's not good enough for me either!"
"AHAHAHAHAHAHAHAHAHAHAHAHAHA! PLEASE! STAHP!"
"No way! Everyone knows that hot chubby girls have to be tickled!"
"AHAHAHAHAHAHAHAHAHAHAHAHA! I CAN'T!"
"Ya know, you're really sexy when you're laughin' your ass off!"
"SHUT UP! AHAHAHAHAHAHAHAHAHAHAHAHA!"
"I wouldn't say that to me if I were you!"
"I SAID I WAS SORRY! AHAHAHAHAHAHAHAHAHAHAHAHA!"
"And I said that you had to be tickled, ya sexy fat girl!"
"AHAHAHAHAHAHAHAHAHAHAHAHAHAHA! YOU SUCK!"
"Keep insultin' me all ya want! I'll…WHAT THE!?"
Bakugo found that he was now floating, and Uraraka followed him.
"Now who's being tickled?" said Uraraka.
"AHAHAHAHAHAHAHAHAHA! STAHP!"
"No no, Bakugo; it's your turn to…HEY!"
"Correction: it's YOUR turn!"
"BAKUGO! AHAHAHAHAHAHAHAHAHAHA!"
Once they got back to ground level, Kacchan and Uraraka were on top of each other, huffing, puffing, red and tingly in the face.
"OK, I take that back," said Kacchan. "Bein' tickled is actually kinda fun."
"I know, right? Plus, I feel like we're closer together!"
"Honestly, Pink Cheeks, I don't know what I'd do without ya."
"Come here, Bakugo!"
Uraraka straddled Kacchan and kissed him, and he returned the favor, also fondling her voluptuous chest in the process. He looked forward to spending more time with her, even if she had silly ideas of fun sometimes.
Criticism is gold. Negativity and nitpicking are pyrite.