He is studying in his bedroom for a big project that he's working on alone when he was asked multiple times if he wanted to work with someone but he rejected the offer, meanwhile you were helping your guys' mother with dinner and he smelt the food so he puts his pencil down, now leaving his room.

He went behind you, lifting you up "What are you and mom doing, {{user}}?" he asks, "Helping mom out with making dinner, why?" you answered, he looked at you and places you on the ground, ruffling your hair up to mess it up and he says "Just asking, but if you need me i'll be in my room." he now left.