[more pervy shit in this chapter, wow~! I was too lazy to proof read it so let me know if there's typos and stuff, thanks!]

Third person POV

"S-Stop! Ugh-it hurts! K-Kirishima~!" Bakugo cried in pain as he tightened around Kirishima's member in an effort to stop his actions in which he didn't completely fail. Kirishima stop for a brief moment.

"Bakugo?" Kirishima looked down at Bakugo, breathing heavily and sweat dripping down his face.
"D...Dumbass..." Bakugo glared devilishly at Kirishima in an angered expression.

"Sorry, let me know when I can move again." Kirishima felt bad for the pain he caused Bakugo but he ensured himself that he wasn't going to hurt him again.

Seconds passed for Bakugo to steady out his breathing. Now that Bakugo was calm he decided to make the first action. He wrapped his legs around Kirishima's waist and pulled tightly to close the space between their lower half. Kirishima was taken by surprise at this unexpected action from Bakugo.

"Baku-go~!" Kirishima groaned satisfyingly.
"Now you can move" Bakugo reaches up and wrapped his hands around Kirishima and pulled him down closer to his face, squishing their lips together. Both their tongues explored one another's mouth.

Kirishima thrust into Bakugo as he melted into the warm and passionate kiss with Bakugo.
Bakugo's moans were muffled by the inaction French kiss.

Kirishima had now started thrusing harder and more forceful, resulting in Bakugo digging his nails into Kirishima'a backside.

Kirishima pulled out and flipped Bakugo over so he was laying on his stomach, he thrust back in.

"K-Kirishima~do it now~!" Bakugo grunted.
Kirishima hesitated only for a second but soon regained his confidence.

He ran his hands up Bakugo's back, making him shudder. Kirishima's hands wrapped around Bakugo's neck.

Slowly, the red head lowered his head to the level of Bakugo's nape while still thrusting.
Kirishima licked the desired spot he had decided to plant the mark.

Bakugo was getting nervous and anxious. He just wanted Kirishima to quickly get it over with.

"Hurry up-aahn~ahhh~!" Bakugo spike through his moans.
Kirishima left a gentle kiss before opening his mouth and chomping down on Bakugo's neck whilst reaching his climax he made a finally thrust and ejected deep into Bakugo.
"AAHHHH!! FU-CK!" Bakugo yelled in pain and agony as he too climaxed. He could feel his insides filling up and the razor-like teeth piercing deep into his skin.

Kirishima pulled out of Bakugo and released his nape from his mouth, blood instantly dripping from the teeth marks . Bakugo slumped down in the bed, heaving and gasping for breath and loosing consciousness.
"Shit..." Kirishima cursed as he stared down at the mark he made, making a bloody. He bit down deeper than he intended.

He hurriedly slipped on a pair of boxer briefs on Bakugo then himself and ran down he stairs to retrieve the first aid kit. He sprint back into his room.

He tended to Bakugo's still bleeding mark and tucked him under the blankets. Kirishima's heart was pounding and he felt bad for harming Bakugo so badly and permanently. He let out a heavy sigh and walked out of the room, closing the door behind him. Rubbing his temples he made his way down the stairs.

"How did it go!?" A housemaid asked thrillingly with all the other helpers standing behind her in a jumpy mood. 
"Uuuuugh...I messed up." Kirishima shook his head in a disappointing manner.
"What!?"
"You didn't mark him!?"
"Is he hurt!?"
"Did you guys not go through with it!?"
"Did he fall asleep in the middle of it!?"
Kirishima was swarmed with questions.

"No, no no no, he's marked...but I've never done it before and I think I did it wrong." Kirishima sat down on the couch and was handed a glass of water by one of the butlers.
"Thanks" he replied and down the glass.

"So...is he hurt?" The question was thrown out of the small crowd of helpers.
"I think so but I bandaged him and now he's sleeping...looked pretty bad though." Kirishima quirked an eyebrow.

"I hope he turns out alright...I got him marked and now he's not leaving." Kirishima smiled to himself.
"Sir, there was a letter from the assessor (guy who checks for marks) and it says that he will be at this household on two days, he says he would appreciate a write back." A housemaid informed him.

"Two days...it should be enough time for Bakugo to heal...I think." Kirishima grumbled and got up off the couch and into the kitchen, refilling his cup of water and went back upstairs.
"I'm off to bed, take care of yourselves." Kirishima nodded to the helpers. They all bowed and waited for Kirishima to be out of view then the scattered comments and conversations about the current situation.

Kirishima creaked his bedroom door open and set the glass of water on the nightstand beside the bed Bakugo was sleeping on.
"This is for you, drink it up." Kirishima was aware that Bakugo was sleeping and he wouldn't get a reply but it didn't seem to bother him.

He strode into his office and sat behind his desk, working on a letter to write back to the assessor. He grinned to himself.

Kirishima POV

Well...I did it! I marked the man I want to have my whole life! I wish it was less painful for him though...I should give him a massage when he wakes up, hopefully it'll relax his sore muscles.

ding

Huh? Oh, I got an email.

From Todoroki Shouto:
Midoriya and I were wondering if you wanted to go out tomorrow to hang out, what do you say?

Todoroki! I haven't met up with in in like a month, it'll be fun to see him and Izuku again! I'll let him know that I'm totally down for it and...oh that's right! He doesn't know that I bought at this year's auction. It'll sure be a great surprise to him, can't wait to introduce them to Bakugo! I emailed Todoroki back to let him know that it's sound fun and I was defiantly going.

[Kinda short chapter but I feel like it's K :) Baku gon be feeling hell on his ass and his neck when he wakes~~till next time! TodoDeku arises!!!]