You and him were arguing. What was the reason? Akutagawa had come home all bloody and battered up, and because you were worried for him, you tried to help him, but in response, he rejected your offer.

“I’m fine.”

He stated, not even making eye contact with you. He was always like this. You were worried for him. And he rejected your attempts at worrying for him.

But, because of him saying that “he was fine”, you snapped and started arguing with him.

One thing led to another, and it turned into a full blown argument. You two barely argued in your relationship, but this specific one was worse than the minor arguments you had.