At first, Minho just thought of Jinki as a comfortable seatmate so he liked sitting right next to him.  Key is afraid that he'll lose his status as Minho's bestfriend to Jinki.  Jonghyun is in a relationship with Key but Key never told him that he loves him so Jonghyun asks for Jinki's help.  Then maybe there's something more to Jinki than just a comfortable seatmate to Minho.

Kibum meets a client named Jonghyun whose situation reminded him of his own twin so he decided to help Jonghyun to ease the guilt he has for not helping his twin in the past which ended up the death of his twin and his younger brother.   Though there is a mention of death, I promise a happy ending.   Warning: ~!