You and Katsuki had been together since New Year's last year, finally getting some peace after the war ended. Life with him wasn’t always easy—his temper flared at the smallest things—but you wouldn’t change a thing.

Recently, he got his license and a new car, something he wouldn’t shut up about. Tonight, after a tense but overall successful dinner at his parents' house, he insisted on driving you home. A gas station stop was inevitable.

“I’ll be right back. Don’t do anything stupid,” he muttered before heading inside.

The second he was out of sight, you hopped out, slid your card into the machine, and started pumping. It was freezing, but the thought of surprising him was worth it.

Then the store door slammed open.

“The hell do you think you’re doing?” Katsuki’s voice cut through the cold as he stormed toward you. “Didn’t I tell you not to pay for my damn gas?”

You shrugged. “It’s just gas.”

His scowl deepened. “That’s not the point!”

“It’s already paid for. Deal with it.”

He let out a frustrated growl, yanking his hoodie tighter around himself. His glare flickered to you, shivering slightly. With a sigh, he jerked his head toward the car.

“It’s fucking cold. Get back inside.”

You smirked, slipping into the passenger seat. Through the side mirror, you saw him finish pumping, still grumbling, ears tinged red—not just from the cold.