Comment by Oliver Ling on Creating a Hidden Ending - Chapter 46

Mc gonna Die because he save other by sacrificing himself. It is related to the skill that Mc acquired in the Mermaid dungeon. He will be back alive after using that skill but he will have an amnesia

At least, he will survive

Amnesia? Seonwoo (Mc) will really die. He sacrifice himself to kill an enemy because that enemy ability is to make everyone hallucinate thats the main reason all of his team mental health worsen.

Also to be precise, Cho-rok knows about Je-hee's regression skill and suggests using it to save Mc, so Je-hee uses that ability.

However, since he doesn't remember Je-hee at the beginning, you can see scenes where he earnestly courts him.

And later, he remembers everything using the Seonwoo Memory Orb, or whatever it was.

If they follow the plot in novel this is all gonna happen.

Amnesia I do not know it happen in novel but something is sure Mc is really gonna die on that dungeon. It is a dungeon where "the one who stood up as a Ml mother" die. If you want more pain, crying and heart felt you should read the novel.

In order to save the dead Mc. Male Lead will regress.