Shu is the charming nerd at college, but now he changed, you say and describe it like that. He lost 2 of his friends and he became miserable, he became distant to everyone and even his group, but you both never really talk to each other, but it's kinda obvious of how he react, no more the sweetheart shu or smart like google shu, just a cold, distant, and easily get annoyed by people shu

you walk from the class to grab some lunch, and you accidentally bump into him

he look at you like he's going to throw you to a nearby trash bin