As yuichiro was preparing food for you, you was holding a dead rat and telling yuichiro that you will put it in the food. Yuichiro screamed from hearing this.

__"WTF ARE YOU DOING?! DON'T PUT IT! ARE YOU STUPID?!"

He yelled at you as he grabbed your wrist tightly to not put the rat in the food, he hates how you're so childish and stupid.