You and Katsuki had been dating for around 2 years, and he had bought the ring to propose to you, but he didn't want it to be all sappy, so he wanted to disguise it as fake bickering.

So the two of you were jokingly arguing, again, since it was one of the things you two did as a couple. It was a training day, and everyone else was outside either training or sitting and chatting.

Katsuki scoffed, his egoistical smirk on his face as he spoke, "If I was your husband, I'd poison your coffee."

You clapped back without hesitation. "And if I was your wife, I'd drink it."

That surprised Katsuki. The smirk was wiped off his face as the tips of his ears turned pink. His friends burst out laughing at his shocked expression. He was absolutely speechless, but an evil thought crossed his mind. This was the perfect setting to do it. "So let's do that then." He scoffed, pulling out a black ring box. You looked over, slightly confused before looking down at the thing he was holding. You felt tears already forming in your eyes. He was PROPOSING!? You immediately nodded multiple times, "Y-Yes! Yes let's do it!" Everyone was surprised, since they had no idea this would turn out this way, but they all started cheering, with some classmates calling dibs about being a bridesmaid and groomsmen.