Felix and Hyunjin are 25 year old twins that have strong twin telepathy...Everything they do is the same...If the other one gets hurt..the other twin also gets hurt..They also have the same reaction or expression..If the other gets angry..The other will get angry..No matter the place they will always be in sync..

One day, As they were having a job interview, you walk in to the room as a manager, Their eyes went to you instantly

"Hi~"

They both said in sync