U:

Pain surged through your, this time, making you stir, and get up.
The pain ached your muscles, starting from the top of your collar, down to the bottom of your shoulder crooks, to the other bottom of your pinky nail and so forth.
Every single inch of your skin held a special mark to it, flesh and tan, back included, covered in hickeys, and teeth marks, small bruises popped up bump after bump, but it was the claws marks that hurt the most...
They traveled down from your chest to pinky toe. The pain was was sorta kinda yah, handable, and who's fault was this? Well you can ask the genius himself, or so what he likes to call himself.
You slowly get up, pushing yourself off from the mattress as you steadied yourself, nearly tripping on your own two feet. How embarrassing, you thought. You sighed, feet beginning to move, one in front of the other, carful with each and every step, towards your destination. It felt so far but yet so close!!
As for your destination, it gleamed in morning dew, reflecting back to you your every error, starting from the heavy black bags from under your eyes to the messy bed head that sprung to life unnoticed, and a whooolle lotta bite marks, more than you thought. 'As expected... he even go my shins and knees...'
You jumped,
"Shh, it's just me..." the mysterious man biter had finally awoken, you groan,
"Well who else could it be?" You ruffle his hair,
"Why'd you jump then?" He smirked,
"Thought you were asleep" he shrugged,
"Nice marks, wonder where the cam from"
"From "WHO" they came from? Should be the question" he chuckled, tightening his hold around your waist,
"Something wrong about marking my territory?"
"What are you? A dog?" You smirk,
"I don't want other guys on you, especially grape fruit"
"I change in the girl's room" you yawn,
"So? What if a girl like you?"
"Katsuki, are you crazy?"
"No" he yawns too,
"You marked/bit my legs, too"
"So? Problem?"
"They hurt baka"
"They look good on you" you scoff,
"My point is that I am not going to school looking like I had just been attacked my a dog"
"Good thing it's the weekend, I get to have more fun with you" you roll your eyes at the mirrored reflection and groan,
"Your such a bad dog"
"And hey, I didn't attack you- and what's up with calling me a dog?!"
"Uh huh, cause you are one"
"What? You enjoyed it, and no I'm not" he growled,
"... Pervert"
"So are you~"
"You didn't have to this far with your "markings"" he kissed your cheek,
"I'm sorry, now can we go back to bed?" you kissed him back,
"But it's not like I don't like them" he smiled,
"Then... can I make more?"
"Absolutely not idiot"
You both stood there in front of the mirror for a little longer, before Katsuki decided to go back to bed, too tired of standing around and how it was to early morning to be awake over some scratch makes, carrying you back to bed with him,
"Ne ne, Katsuki..." he hummed, pulling you closer to him,
"Why do you... why do you mark me so much?" It was blunt, yes, but you needed to know why, everyday you woke up with teeth marks and such, and it hurt,
"Again with this?"
"I have trouble changing in the girl's room cause of you! And I don't want people seeing them!"
"Is that all?"
"Katsuki" you growled,
"I just don't want anyone on you"
"Is that so?"
"What?"
"Are you deaf?!"
"No woman!"
"Because I just said I change in the girl's room!"
"So?! Why, are you embarrassed?"
"No... I'm just curious"
"*sighs*" you feel guilty now, but he only shrugs,
"I know it's more than "curious" baka"
"Oh! So you do want to talk!"
"Shut up (y/n)" he growls,
"But... It's not like I don't like them, they just... hurt, and I don't want other people teasing me cause of them" he sighs, (we all have those feels of not wanting to be embarrassed)
"I... i was honest when I said that i didn't want anyone else on you..." you smiled,
"What? You..."
"Just go back to sleep (y/n)" you pinch his cheeks,
"Your really are cute"
"I am not" chuckling to your self, you wrap your arms around him,
"Now go to sleep-"
"Ne ne katsuki!!"
"Why are so annoying today?" You grin, beaming bright red from ear to ear,
"I love you!" He grumbles,
"*sigh* love you too"
"Ne ne!! You didn't kiss my cheeks in return!!" You loved it when Katsuki was honest with you, he was too adorable~
"God, your annoying" you hum, kissing him,
"But is that why you go to such lengths to get my legs too?"
"Why do you care? I like biting you" you poke his cheeks, a new tick mark forming on the side of his head now,
"Meanie~" you dig your little fingers into his hair, and roam through it,
"... (y/n)" you stop
"Hm?"
"... do you... really not like me... me biting you?" You soften,
"It's not like I don't like them, i like your marks, just without the pain, but it would be great if you didn't bite so much too"
"So? Do you want me to stop?"
"Well... you didn't say you like biting me-"
"More like marking"
"... dog"
"Oi"
"Anyway!-"
"So?... well... w-would you ever... choose someone- Well anyone... else... over me?" He blushed,
"Katsuki?" He quickly turned away, his back now facing you,
"Katsuki-"
"Forget it!! I didn't say anything!"
"Ne, baka, you" he steamed, but heard you,
"You know better, and I'm sorry if I made you feel guilty kacchan" you slowly wrapped your arms around his him, legs digging up his waist for a better grip,
"I would never... ever... ever choose someone else over you, no matter how painful the marks are" You could feel his chest slowly rising and steadily sinking as his hand grasped yours, a moment of silent was taken, before he finally choked out a small but loud enough to hear;
"... Really?"
"Yes really, no matter how much an idiot you can be, nor how reckless you can be, I would still love you"
"You... you would never pick deku over me right?" You sigh, an eye roll following,
"Ba-ka! No! I wouldn't! Rest assured! We're just friends" he groaned
"Friends"
"Be nice, he hasn't done anything to me"
"The idea of another male being around you just angers me, especially how they look at you, I don't like it" you look up at him,
"I know, and I'd take you for a jealous type" he growled, swiftly turning around to face you,
"I have a right to be jealous here!" This made you giggle,
"Don't laugh!" You cupped your cheeks,
"I said don't laugh damn it!" You forced yourself to stop
"Sorry~"
"Yah, like hell you are"
"Ne, Katsuki"
"What is it now-"
"I love you too" he blinked for a second,
"W-Whatever" arms tightening around you, he blushed against, this time, he sunk into your breast and sulked,
"Your a adorable"
"No, I'm handome" you choked, cheeks puffed out and everything, 'what the hell?! 😂'
"Laugh and I'll kill you"
"I-I'm not!" You had to pinch yourself somewhat several times die to down your laughter,
"Ne... (y/n)?"
"Hm?"
"Can I..."
"Can you what?"
"... can I make one more?"
"Hell no!!"
"Well I'm making one anyway" 'this ass!' he shifted up, now hovering over you,
"What?!- no no wait!! Katsuki!!" Too late,
"Itadakimasu~"
"Katsuki! Baka!"

And now, let's just say, it was more than one, and more than just one spot, and let's just say... it turned out to be more than just one bite that day. Let's just say, you couldn't walk for a week later on~

"Tsk, damn you Katsuki, this is worse than the bites"
"Oh shut up, you enjoyed it"
"I hate you"
"Yah yah, whatever I love you too short stuff *smirks like an idiot*"
"Tsk... wipe that smug look off your face"
"Now now, I'm sorry, at least you don't have to go to school and deal with these extras everyday"
"I have to deal with you"
"Oi!"
"I love you too kacchan~"
"*growls*"
"Your adorable"
"Stop calling me that!!"
"And at the end of each day~ I win"
"You didn't win anything!! You want me to fuck you again?!"