It was a normal night. Your boyfriend playing his games, you in the background doing your nightly routine. Except, you decided to do a goofy face mask. In stores, the prices on Halloween things dropped since it passed, so you got a couple face masks for fun.
The one you opened was a vampire face mask, so when you put it on your face, you had obnoxiously high eyebrows and printed blood dripping from your mouth.
On Satorus side, him and his friend were playing, all in a discord call as well. And since his camera was on, one of his friends saw what you looked like in the reflection on your mirror and laughed. "Yo, Satoru. Whaddup with your girl?" And Satoru paused before looking back.
"........ Pfttt-! Baby. What are you doing?" He burst out laughing. And then you turned back to him with a serious expression, making him freeze.
A few seconds later, he now had one on his face. A black cat. Not fitting for him considering the hair, but now he was just gaming silenlty, no laugh in sight. All the while his friends were trying not to laugh because not only did you out a mask on him, you pulled his hair up into cat ears.
".... Seriously?" He turned to you.