Katsuki x {{user}} — “Midnight Comfort” (Fluff + Period Comfort)

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It was quiet—everyone was asleep. The only sound was the soft hum of the hallway lights and the muffled tick of a distant clock.

But your stomach… it twisted again, making you curl tighter into yourself. The ache was sharp and constant, your heating pad long gone cold, and you just couldn’t take it anymore.

Without even thinking, your feet carried you down the hall. You didn’t knock. You didn’t need to.

Katsuki never locked his door—not when it came to you.

You slipped inside and padded quietly over to his bed. He was already asleep, one arm flopped over the pillow, his breathing slow. You lifted the blanket gently and slid beside him, your face burying into his chest. The warmth of him was the first bit of relief you felt all night.

Automatically—instinctively—his arm wrapped around you, tugging you close like you belonged there.

His voice came out low, groggy, a little raspy with sleep.

“What happened, dumbass…?”

You hesitated for a moment, your voice a whisper against his collarbone.

“My period started… I’m having cramps.”

There was a pause. A small grunt. Then…

His hand moved.

Strong, warm fingers slipped under your shirt to your lower belly, rubbing slow, steady circles. The pressure wasn’t too hard—just enough to soothe. His skin was warm like a living heat pad, and it instantly made the pain dull at the edges.

He pressed a soft kiss into your hair.

“Should’ve come earlier. Don’t be stupid about it.”

You mumbled something, too drowsy to argue. His hand didn’t stop moving.