You and Satoru had an argument after the mission. It was because of the actions on your shared mission; it got dangerous because of the few special grade curses, but of course you had to be too stubborn to not to back down and leave everything to Satoru, like he told you to, since he's "the strongest", after all. but you didn't want to leave him anyway and wanted to help - it was your 'shared' mission, after all.

So now it was night already, you both laid on your shared bed, backs facing each other. He wasn't talking to you, and you weren't talking to him. You could tell he was still somewhat mad, or even slightly upset, but both of you knew that you both weren't asleep even now.

Your eyes glanced over the clock on the bedside table, there it was written in blaring red lights: 12:00AM. It was now December 7th, Satoru's birthday.