3rd Person POV
"For me to enter you, my sweet Omega."
Kat gasps as he feels Kiri lower his hand from his chest to his now throbbing member."Kiri..." "Nah... Right now, I am Alpha. Call me as such. Remember that from now now on." Kiri corrects. "Oh... Okay... Alpha..." "Yes Omega." "More...." Kat whispers. Shivers are sent allover Kiri body, right to his hardening c**k. "As you wish, Kitty Kat." He smirks down and Kats panting, shivering body as he moves his body to Kat's pants. "I'm going to remove these now." Pulling on Kat's pants, he removes them along with his boxers in one pull. "hmmm... " Kat whimpers as his member springs from its concealment. "Oh Kitty Kat. You're big. I never would've thought THIS would be hiding under here." Kiri says blushing madly. 'I just might have him ride me later... Oh Goddess, bless you.' He thinks to himself. Kiri then softly grabs a hold of Kat's length, stroking it gently. "Ohhh, Alpha. Faster... please..." Kat begs. "As you wish Kitty Kat." Kat shivers at the nickname. 'I could get addicted to this. This might have been a bad idea.' Kat thinks. 'I wonder when....' Kat gasps and is pulled from his thoughts as he feels Kiri poke around his entrance. "Wha... what are you doing?" He asks. "I'm prepping you. Unless you want me to just slam into you. I just don't want it to hurt." Kiri smirks as he sits back on his hunches to show Kat his length. "It's not as big as yours, bit since this is the first time you'd have something here," as he pokes into him again, "It could really hurt you. I don't want that to happen." Kat blushes slightly at this information. "oh.. o..okay..." cursing himself for studdering, he is pulled from his thoughts, yet again, when he feels Kiri move 3 fingers to his mouth "Suck.", he demands. Kat just nods his head and opens his mouth for him. After his fingers are sufficiently lubed, he removes the wet fingers and Kiri enters him with one digit. Kat gasps at the sudden intrusion, but as Kiri moves his finger into him, moans start to escape his lip. Slowly Kiri adds two more digits, slowly opening him up. "Alpha, I want you... please!" Kat moans out. "Condom or lube?" Kiri asks. "I don't care... I just want you in me... now." Kat begs. "Okay. Lube it is. I'll be right back." Kiri says while he makes his way through the apartment to his room, into his side drawer, grabs the small clear bottle and makes his way back to Kat. He walks in and Kat has made his was onto all fours and is fingering himself. "Oh... that's a nice sight to see walking back in." Kiri smirks as he walks up to Kat. Kat now bright red, "Alpha... Please... Put it in me." He begs. "You've really gotten into this. You are such a sweet Omega. Let me hear you beg more for my cock." Kiri smirks. 'he's going to kill me for this at some point, but right now I don't care. He is getting into this, and so am I. A little too much... oh no' "Please Alpha. I want you. I want you to slam into me with your nice fat Alpha c**k. I want you to knot me. I want you to fill me with pups.I want you to slam into me so I can not walk tomorrow. Please! Aaallllphhhaaa. Pleeeeasssee." Kat begs. "Oh Kitty Kat. I will. I will make sure you are blissed out of it. By the end, you'll be full of my pups." Kiri readies himself behind Kat, Lining himself up. "Are you ready, My sweet Omega?" Kat purrs in response. Kiri's eye go wide. Normally only Omegas can purr, but Kat, an Alpha, just purred. This is getting really weird. "Okay. Here I go" As Kiri starts to slowly enter him, Kat starts to move his hips down onto him. "Ohh.... oh please... more... just slam it into me... please..." Kat begs trying to f**k himself on Kiri's c**k. "Okay. But remember... you asked for this." With that, he slams deep within Kat. "OHHHH GODDESS!!!! YES!!!!" Kat screams in pure pleasure. "Oh goddess, Kat. You're so tight." Kiri gives Kat a few moments to adjust to his size "Let me know when you're okay for me to start moving, Kitty Kat." Kat just nods in acknowledgment. "O.. okay Alpha... I'm... I'm okay now... Please... you can move now..." Kat says while shifting his hips back and forth. Kiri smirks down at his friend and pushes down on his shoulders, making his chest flush with the bed, and his ass in the air. "There, much better." Kiri states while pulling out of Kat, and slamming himself back in. "Oh goddess! Kiri.... More!" Kat is screaming in pure ecstasy. "Okay Kat." He pulls out slowly and slams back into him, trying to keep a slow steady pace. "Damn Kiri. Harder! Go faster. Please! I want to make sure I can feel this in the morning! I don't want to walk tomorrow. Please! More!" Kat yells. Still a moaning and panting mess. Kiri smirks and starts thrusting at ungodly speeds and as rough as his hips will allow him. Kat's tongue hanging out, eye's rolling into the back of his head, screaming in complete bliss. "Oh Goddess! I think I'm going to c*m!" He screams. "c*m for me Omega! c*m for me, untouched." With that, Kat came, harder then he thought possible. Soaking the sheets under him. "Oh goddess Alpha! Knot me! please!" Kat begs. "Almost there, Kitty Kat. I will fill you soon." Without losing speed Kiri leans down to Kat's neck, placing small kisses and nibbles around his nap. "Ohhh... please!!! Bite me! Please! Bite me!" Kiri nods his head in agreement and goes to Kats neck, near, but not on, his scent gland and bites down. Not enough to break skin, but enough to have visible marks. Kiri starts to suck and nibble around the bitten area. "Oh... Kitty Kat, I'm close." Kat moans in excitement "Please! Alpha! Knot me! please!" Kat begs again. "You asked for it Kitty Kat." with that, he slams his knot into Kat, locking them together. Kat's eyes blow open as the knot swells inside him, he can feel Kiri empty his seed into his stomach. Loud moans escape Kat's lips. Kiri lay's them down on their sides, stroking Kats thigh whispering words of praise in his ear. Crooning softly. "It'll be over soon. You were so good for me Kat. You did so well." Kat can feel the heat in his cheeks, and wiggles his back so he is flush up on Kiri's chest. "Thank you, Kirishima. Thank you for this. What ever you promised Denki, I'll pay." Kat yawns. "Are we still friends?" Kat asks. Worried that he may have just f****d up. "Of course we are!" Kiri exclaims. "Why wouldn't we be?" Kat sighs "Because friends don't f**k friends who have mates..." Kat explains. "Oh Kat," Kiri holds him close to him "It's okay. I told you. I talked to Denki. It's okay. If it makes you feel better. I am now curious about how all this feels." He blushes as the words leave his lips. "Oh... Okay." As sleep starts to take the blonde Alpha, he can feel the others knot deflate and his softened c**k slid out. A soft whimper leaves Kats lips as he feels the emptiness within him. "Maybe we should get cleaned up. Here," Kiri says while standing up, "Let me help you." Kiri picks Kat up bridal-style and starts to the bathroom. "What are you doing?" Kat asks. "Heh. It's called after care. After s*x, usually Omegas like to clean themselves, but it makes them happy when their 'Alpha' help them. If you want, I could write down everything I learned and know about Omega care. It might help." He shrugs while placing Katsuki on the sink. He then turns to the tub to start filling it. He starts to add some bubble bath and run his hand through to check the temperature. "Now, do you want me to help you or are you good doing it yourself?" Looking back and walking towards Kat. "Well... I wanted to know everything. If this is part of it, show me." Kat states, a shakiness in his voice. "Okay." Picking Kat up he places him into the tub. Kat hisses a little at the warmth of the water against his soar backside. Kiri getting in behind him, "Are you okay, Kat?" "Yeah.... I'll be fine." Looking down at the water with his hands in his lap.
Time Skip (Trigger Warning. Self Harm)
The next day, Kat wakes up in his own bed, snuggled up in soft blankets. It seems Kiri took it upon himself to change Kats sheets and even got him a new blanket. 'I'll have to thank him properly.' He thinks. He made his way to the door, and he hears arguing in the other room. He stops at his door to listen in. Pressing his ear to the door he hears, "I don't understand." 'That's Izu's voice' Kats eyes widen as he continues listening. "What part don't you understand? The part where he is trying so hard to understand you, or the part he asked me for help?" 'Oh no Kiri... you didn't' "I just don't know what to think... I only said I thought it was going to fast. Not that I didn't want to be with him." 'Oh no... Please...' Kat opens up his door and sulks towards the kitchen to get something to drink, still wrapped up in the soft blanket. "Kat... Are you okay? Do you need any help?" Kiri asks running up to him. Always worrying about his friend. "I'm lucky to have a friend like you, Red." Kat whispers, just loud enough for Kiri to hear. "Thanx bro. I'm serious though. Do you need help?" "No. Thank you. I'm just getting some water and going back to bed. If anyone needs me, I'll be in bed." With that, he grabbed bottle of water from the fridge and walked back to his room.
"Red? It's Red now?" Izu almost yells. "What is going on?! I'm so confused! First he is wanting to be my 'forever mate' and now... Now I find out he is sleeping with you.... AND DENKI IS OKAY WITH THIS?!?! This is beyond messed up. I need help understanding this whole thing. All of it. NOW!" Izu demands. Kiri holds his hands up in surrender and shakes his head, "I'm sorry. That's not my story to tell. Just know that, whatever happened between me and him last night, that was all for you. He wanted to know how you felt. What to do to make himself better. He's sick. A lot more then he lets on, but I believe that if you took the time to really talk to him, try to understand him, try to be with him, you'd understand too." Kiri states and turns away from Izu.
Kiri walks towards Kat's room and knocks. "Hey, I'm ganna go to the store. Want anything?" Silence. "Hey... Kat... Please... Answer me so I know you're okay." Silence. "I'm coming in Kat." Silence. Kiri tries to open Kats door, but it's locked. "Kat. If you're in there, please... Let me in." Silence. "IZUKU! I NEED A KNIFE AND A HAMMER! ASAP!" Kiri is now yelling to the greenette in the kitchen. "What for?" Izu questions. "NO TIME DAMNIT!!!! JUST GET ME IT NOW!!!! KAT I MEAN IT. LAST CHANCE AND I'M CALLING THE HOSPITAL! OPEN. THIS. DOOR. NOW!!!!" Silence. "Damn." Kiri grabs his phone from his pocket and dials the ambulance to come get his friend. He runs to the kitchen and grabs the big knife and a hammer, Izuku just sitting on the couch not realizing the severity of the situation, turns to look at the frantic boy and what he is doing, follows him to Kat's door, and see's him breaking his door off the hinge. "What are you doing? That's his room." Izuku exclaims. "I KNOW THAT! Sorry. Back up. I'm tearing it down." With one final blow, the door comes down. There on the floor, surrounded by red liquid, is Kat. Unconscious. Bleeding. Scissors in his hand, also covered in blood. "Izuku, go let in the EMTS." Izuku is just looking in horror at the scene in front of him, "IZUKU!" "huh?" "NOW! GO! HURRY!!!! GET THEM UP HERE!" Izuku nods his head and bolts for the front door letting in 3 guys in uniforms, pointing them in the right direction to Katsuki. "We need to get him to the ER, fast! Who is the one that is responsible for him?" One guy asks. "I am. Technically. His parents trust me." Kiri steps up. "Okay. You are to come with us to answer some much needed questions." "Yes, Sir."