Chapter Text
Izuku wishes he hadn't come home early.
But it was their anniversary. Izuku always came home early on their anniversary. He always came home, even if he had been overseas on a mission.
He always goes all out for his Kacchan.
So when he had pulled into the driveway and saw the shiny orange car still parked in the driveway, he had been delighted!
Kacchan was home!
A bright red car that Izuku recognized as Kirishima's was parked on the street and Izuku shook his head, still smiling.
Kacchan never could plan anything out by himself. The redhead was a good choice in asking for anniversary help.
At least...that's what he had thought.
He quickly entered the house, silently unlocking the door, wanting to surprise the surprisers.
That's when he heard the first moan.
It was loud, drawn-out, shaky, and unmistakably sexual.
Izuku froze, his eyes drifting to the stairs.
Another sound, faint.
The echo of skin slapping against skin.
He's moving towards the stairs when another moan rings out.
Maybe Kacchan is watching naughty videos, he thinks desperately, silently climbing the stairs.
The moans are louder now, more insistent.
Kirishima's.
His heart seizes in his chest, but his feet are still moving.
Up the rest of the stairs.
Down the hall.
Outside of his bedroom.
His and Kacchan's room.
In his and Kacchan's bed.
He's gonna vomit.
Kacchan's voice cuts through the moans like the sharpest blade, stabbing him deep in the gut.
"Fuck yeah," he moans. "Love it when you can be loud for me."
Kirishima sobs.
Deku is close to imitating him, his breath going shaky in his chest.
"Kats-" Kirishima moans, his voice is wrecked and needy.
"Fuck yeah, you're so tight, Ei," the blond growls, the sound of slapping skin getting faster.
Deku wishes he was deaf.
Wishes that he could have just walked in and baked his cake.
Clueless.
The sound of skin slapping skin is louder than anything he's ever heard in his life.
"Kats, please, baby, please," Kirishima gasps, the sounds only getting louder and faster.
"Fuck, fuck, Eijirou-!"
The sound of Kirishima's wail drowns out the choked noise he makes listening to his boyfriend achieve orgasm with another.
They're quiet for a while, no doubt catching their breath before Kacchan groans loudly.
"You're so messy," he grunts.
But there's no heat there. Only tender affection.
Deku's heart is pounding.
"I wonder who's fault that is?" Kirishima jokes, followed by the sound of rustling sheets. "Maybe if you didn't fuck me so good, it wouldn't get everywhere."
Kacchan huffs out a laugh.
Deku is starting to hyperventilate silently.
"I'll go get us some towels and snacks, and we can relax for a few. After all, it isn't often we have the house to ourselves."
A soft, wet sound.
A kiss.
"Bring me some pudding," Kirishima calls, nonplussed by Kacchan's words.
"Yeah, yeah, you always say th-"
Izuku's head is down when the door flies open, so he doesn't see the blond's face when the door swings open.
He only hears his sharp inhale.
There's a stinging, painful silence, broken only once by Kirishima's own shocked gasp.
It may have been years or seconds before Izuku is finally bringing his gaze up.
Up past a flaccid, still sticky penis.
Past a patch of blond pubes, still wet with someone else's semen.
Past love bites and bruises.
Past lips that are still shiny with spit.
And into wide red eyes.
He manages a small, broken smile, one that hasn't been on his face since his middle school years.
"Happy Anniversary, Katsuki," he says, voice strong even when his heart was breaking.
Katsuki jerked, his eyes widening further.
It had been years since that name had fallen from Izuku's lips and it was just as foreign to the other as it was to himself.
"D-Deku, y-!"
"Came back early?" Izuki finishes, the thin smile still firmly in place. "Yeah. It's our third anniversary. We've been dating for three years."
Katsuki's eyes are gonna fall out of his head if they get any wider.
"In fact," Izuku says, still smiling as he's pulling a small, emerald green box from his pocket that has Katsuki stumbling back, gripping the door frame so he won't collapse to the floor, "I was hoping it would be our last anniversary as boyfriends."
Kirishima makes a choked, broken noise behind Katsuki.
Izuku ignores it.
"I had a whole speech prepared, too. Wanna hear it?"
Katsuki's chest is heaving, indescribable pain in his eyes.
"Deku-"
"My Kacchan," he says loudly, drowning out the other's feeble words. "You are as beautiful and radiant as the day I met you on this earth all those years ago when we were kids. You are amazing, strong, and oh so talented in so many ways. You've been my sun in the sky and my moon in the clouds. You're every star twinkling in the galaxy, and every shooting star. You make me the happiest man alive, and I don't know what my life would have been if you weren't in it."
His voice is strong, echoing through the room.
"I've loved you since before I knew what love was. I loved your smile. Your hair. Your eyes. Your passion. Your smile. Your laughter. Your tears. I loved you."
And here his voice breaks. Breaks on the past tense he used now when it had been present tense, not even an hour before.
"You were the best thing that ever happened to me, and I would be honored if you were the last."
The box creaks open, revealing a small, delicate ring with the words 'Kacchan Sugoi' etched into the band.
"Bakugou Katsuki, would you marry me?"
Katsuki is crying, fat wet tears as his mouth opens and closes uselessly.
Behind him, Kirishima is gripping the sheets so hard they're tearing in his hardened hands, too ashamed to even look in Izuku's direction.
Izuku sniffles, looking down at the small ring with a wry smile.
"I guess I have my answer."
The box closes with a loud snap that makes Kirishima's shoulders jump and Katsuki suck in a broken noise, his hand has been hovering over the gold band shakily.
Izuku straightens, shoving the box back into his pocket.
"Sorry to ruin your day," he says roughly, not looking at either man. "After all, it isn't often you have the house to yourselves."
Katsuki flinches.
"I'll show myself out. No need to show me, I know the way," Izuku manages before literally Full Cowling from the house.
He runs and he runs and he runs and he runs...
And he keeps running.
Away from everything.
Maybe if he keeps running, he can pretend the wetness running down his cheeks is just sweat, and not the tears of a broken man.