although some parts can be quite sad, mc will always get back to his feet.
and if you want to know important spoiler, none of the important characters are going to die (people MC's befriend or find useful). overall the tone of the novel and manhwa is actually quite light and comedic, they throw joke there and there.
I don't think it's going to have a bad end. at worst it gonna have open ending similar to omniscient reading viewpoint, but tbh I consider it a happy ending since everyone important are saved.

There are times when I would read a manhwa/novel, get curious about what would happen next, search for spoilers and then -sometimes- stop reading the manhwa/novel altogether. Oftentimes it's because the plot is too generic that reading the spoilers is enough to fill in the blanks, or that it got too political that reading through it becomes a chore, and almost all the time it would be because there would be too much heartache that I'd rather not get attached to the characters (for the sake of my sanity). I have missed so many good manhwa/manga/anime or whatever because of this.
But this one, I already knew it won't be a happy story just from the first five chapters, I read a few novel spoilers and was told of what would happen eventually. I know this story would break my heart open, but I still continue to wait every week for a new chapter because the plot is too good. I am unable to guess the next scene and that's making me addicted. I know I would lose in this gamble but boy am I curious as to how things would unravel.
Anyways I'm going to enjoy this for now and regret later ლ(´ڡ`ლ)