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Katsuki comes home to Izuku packing a bag, a sad expression on his face. "Deku? Where are you going?" Katsuki asks, making the alpha look at him. Izuku's eyes are red and puffy; tear tracks drying. "I'm leaving," Izuku says shortly, tossing his phone charger into the bag before zipping it up.
"What? Why? You can't just leave?!" Katsuki squeaks, eyes widening as his Omega pounds in his head, wondering what they've done wrong. "Why? Kacchan, why? Because I am done! I can't live here knowing I'm only convenient for your pleasure! I do everything; I try everything! I cook, clean, pay the bills, make sure we have food in our bodies every week. I go shopping, get things for you when you don't feel well! I take care of you when your sick, and you tell me to suck it up when I am sick!"
Izuku cries, tired. "I don't want to be used as something only useful to you for pleasure. I have been there for you your entire life, Kacchan. And it's exhausting." The Alpha sniffles; tears run dry long ago.
"Dek-" Katsuki clicks his mouth shut, eyes wide, shock evident. "You haven't been there for me, Kacchan. A week ago, my mother was admitted to the hospital, and I tried to tell you, but you shut me up and said you wanted to have sex. I was tired, but I did it, didn't I? I put MY suffering away to help you," Izuku points at him, scarred finger jabbing at him. Katsuki remembers, he was horny, strung high, and just wanted to unwind. He didn't see Izuku's expression as he knotted him before they both laid down, and Katsuki basked in the afterglow while Izuku laid there, emotionless.
He didn't think of it, falling asleep while Izuku laid awake.
Katsuki snaps back, a whine echoing in the quiet room. Katsuki's scent goes from concerned to distressed and pained, smelling of tar and smoke. Izuku fights his inner-alpha, staying in the same spot he stands in, resisting to comfort his omega.
Izuku's scent also turned sad and distressed, the smell of wilting flowers and rotten honey mixing with Katsuki's distressing scent. Katsuki walks closer and tackles Izuku onto the bed. Izuku's eyes widen as he yelps, back hitting the mattress.
Katsuki grabs Izuku by the armpits as he lays down by the horde of pillows on the headboard, pulling the Alpha to lay on his chest. Their chests smoosh together, Izuku's head laying on Katsuki's chest, right above his thundering heart. Katsuki's scent turns from rancid and distressed to calm and warm, smelling of freshly baked caramel and surgery tea. Izuku's pounding heart calms, the feeling of wanting to struggle out of Katsuki's embrace dies down, lids becoming heavy from the past week of little sleep.
Izuku's lids close, falling asleep to the sound of Katsuki's purrs and smooth hands running through his slightly tangled hair.
"I'll be better, Deku,"
It's a promise he'll keep.
(Will he?)