So to conclude as we can at the end of the Mv they finally remember their name and know who they are but we realise they actually all being behind the glass and they all die but say nothing in order to protect Hyuka, so he's the only left Yeonjun is a winner eventhough he die
All those nightmares have stop but I they will met againβ‘I want to add to this that maybe Soobin feel very guilty because he was the one who open the door that project all of them into the parallel world focus on their fear and knew about their identity but also to face fear