@occu I don't remember the order of things so well anymore so I may have to reread the novel, but I don't think you want upcoming spoilers. A few of my favorite scenes are coming up pretty soon if I remember correctly, but I can give you a little tidbit (don't read if you want everything to be completely new and fresh)
When Jinwoo uses the key he got, the A rank hunters and his fellow S rank hunters will learn just how huge the gap between jinwoo and everyone else is.
Tried to keep it as vague as possible, so I hope I didnt say too much.
but like is the key used for this big gate or are we referring to the school one? since the school gate hasn't particularly closed yet, tho the ogre is still halfway in it in the last scene
How does Korea or anywhere in the world not have a non-stop surveillance system because of gates? At the very lease large buildings should have people constantly checking all rooms ever few days. That is the most basic bare bones counter measure that should be in place if people value their lives.
but after this one, the story kinda just went bonkers with like, angels/holy beings and demons/monsters war, it was insane in a not so interesting way.
Do you remember the previous keys? They had conditions and timers linked with them. The gate that this key opens is more terrifying than either of the ones in the story right now. The key is an invitation back to the first gate in the series. The double dungeon.