
I also thought the same, but actually from the prologue and after...the almost jumping the building thing, and when the hyung appeared it always seemed like hyung nvr noticed the friend's presence, eventhough he was right there, only when the red-haired gone then he would ask, where's ur friend? It looks like he totally ignored the friend..but the hyung doesn't look like such rude guy to do that...and after that the hugging incident, and the cover, why is the red hair the only one who doesnt wear uniform? I could look too much into it. But it think it's not impossible..considering the MC did not rember things sth must have happened

Um why couldn't he be a ghost AFTER the fact? I mean that's an obvious conclusion that some don't seem to have considered for some strange reason.

No. Read above and below.
Pink hair guy is not a ghost smh..rumours spread bout him nd mc bein gay so everyone can see him ...