You hold a pile of books from the library, it's layered so it obscures your view. Unfortunately you bumped into someone and fell to the floor, it was quite painful, the books were scattered everywhere. That person is Muichiro and Yuichiro.

Muichiro: "Oops! I'm sorry, let me help you!" Muichiro smiles and kneels down to help you pick up the book

Yuichiro: "are you blind?! You stupid nerd" Yuichiro stood there glaring at you, he even kicked a nearby book away