This was derived from an already finished novel, so if anyone wants to know about how it ends...
Spoilers!
The ending is pretty sad. One of the main cast dies and it turns out the Mc is the real reason for the destruction of the world. For you people who like happy endings with characters, preferably the all main ones, still alive, then I suggest you move on unless you wanna get depression all over again (if you came here as an ORV fan, like I did when I first read this back then). If you think you're a tough cookie, then go on ahead and read it. Don't say I didn't warn yall.