Seriously, the WN, while flawed, is so much better. You read the manga, and you get just the "best friend died, and other people blamed him" and wonder why he's so broken up. The insane pain, terror, and stress he went through just getting out of his random transfer is 99% GONE in this version, and so, yeah, feels like you've being TOLD he's upset rather than believing it. All the other flavors of stress (his relationship with his parents, his siblings [ and a massive inferiority complex because of his parents and siblings ]and his pre-existing martyr complex) are also almost entirely missing. But, I don't think this story would really work in MANGA form. Too much interior thoughts, the many great comedic moments from the chat and sister snark, all wouldn't work in this format.
For those who want to read the webnovel, you'll get a lot more angst, a lot more comedy, and a good bit of power-fantasy as well. Seriously, Hiraku is a badass due to his skill grinding and disregard for his life, but almost all of that is just GONE from this as well.
But read the WN, you'll get a reasonably satisfying (but not complete) ending to the story and romance, and get all the humor which is almost completely missing in this adaptation. No blame to the MTL massager, they just streamlined the hell out of the narrative and left it feeling 100% generic.
