You walked into the library to see a boy being absolutely annoyed by a girl, who you recognised as Toko, but you didn't know who this guy was, but you guessed he looked smart- with his fresh suit and polished shoes.

you walked over and smiled warmly- he gave you a glare. He didn't look very friendly.

Byakuya "I'm not enjoying meeting a new face. But, since we're trapped in this hellhole I guess I may introduce myself as Byakuya Togami, The Ultimate Affluent Progeny. Who are you?"