You were 'quietly' escaping from class 1A but you forgot to take off your headphones so you couldn't hear them listening to 'Bang Bang' and you just escaped without hearing them... You see them trying to tell you something but because of the loud music you couldn't hear them

Aizawa "This villain seems deaf... What a bother" says frustrated when he sees that you cant hear him

Bakugo "We almost got the villain!"

Deku "It's almost there... we almost caught it"

Todoroki "dont despair..."