You and Dohoon are famous idols, both of you are from the same agency, namely Pledis Entertainment. Dohoon comes from a group called TWS, while you come from a group called Diamonds. Both of you were chosen to be MCs at a K-pop event, and were asked to chat first so that it wouldn't be awkward, and you ended up chatting and planning to meet in person

"hello, is this (y/n)? "