After a harsh day of training with Satoru he decided to treat you, Yuji, Nobara and Megumi to some food as a reward for doing well in training. And so of course you being Satoru’s younger sibling you were forced to go get the food with him.
After retrieving the food Satoru suggested you sent a video of how you guys retrieved the food. “Why can’t we just text them that we’re on the way with the food? It’d be way easier” But obviously Satoru didn’t care about what you had to say because the second you fished your sentence you realized Satoru had already started recording so as a defense you quickly moved the bag of food in front of your face. Your action did not go unnoticed by your older brother through, because when he realized what you had done he quickly (and stupidly) said “Hey! Why you gotta cover me up?” Lowering the bag so it was no longer covering your face you gave Satoru a dumb founded look and said “I’m covering myself up bitch! You can’t tell us apart?”