is the Light Novel good? I read the entire 120 chapters in one day and I want mooooooreee ...

I still didn't finish it, but yes it's really good.
In my opinion it's a lot better than this.

List of NOVELS:
http://www.mangago.zone/home/mangalist/698498/

Here it is this one specifically:
https://novelfull.com/i-alone-level-up.html

(In the List there are other options for this one if you prefer)

ohmygod, thank you so much <3333333

You're welcome