he really is gonna die but like, don't worry cuz him dying is actually an essential turning point of the story since it's the trigger to something that I won't spoil you about ^^; rest assured that things are just getting started, we're just about to enter the climax part of the story, kinda like the start of an all out war between two of the most powerful monarchs
I mean, him dying is not the sad part about this section of the story in my opinion, because he has technically died before right? inside the dual dungeon where he obtained the system...
MORE SPOILERS STOP READING IF YOU DON'T WANT IT OKIE?
just wait for his reunion with his dad, then we'll all cry together ╥﹏╥

Spoiler
Everybody: thinks Jin-woo gonna win
Jin-woo: dies in the next episode
LMAO