Review Detail of Resurdus in Epoch of Twilight

The whole premise of this novel is unique and worth exploring. However, the author failed badly at writing emotion. It's to the point of making me wonder if he's a sociopath. The MC went to look for his friend/roommate he's been playing games all night with. He found his dead body mutilated by stomach acid along with a couple others. You'd think he'd atleast be affected by the scene. But nope, the author glossed over it as if it's nothing. Then he went home and acted as if nothing happened in front of his dead friend's fiancé, just because it's inconvenient. Then when she cried after hearing the news, he "comforted" her by saying "It's live. He wouldn't have died if he hadn't gone". What kind of comforting is that? Had the author never once comforted anyone before? Then he met up with a group of friends, after seeing 2 people getting eaten by fishes in a park, and confirmed that apocalypse is coming, he asked the group if they wanted to go karaoke? Dude... And of course, he raped the widow girl 2 weeks after her fiancé died. But apparently, it's okay cuz she felt good. The next morning, he decapitated a thug, and then proceed to massacre the ones running away in 20s just because they're thugs. Bear in mind that the dudes who ran away didn't do anything. Again, zero feeling. After all that, you'd think that he's an experienced warrior from ancient time? Nope, he's just a normal fresh graduate office worker. It's as if to the author, what he did is perfectly normal. It would have been fine if the author intended for the MC to be an antihero character, but he doesn't. Every time the MC does something ridiculous, the author keeps slapping in some weak excuses to portray him as a good guy. Just because he's a normal guy doesn't make it okay to rape. Just because they're thugs doesn't mean you can massacre them when they haven't done anything. If the MC wants to rape or massacre, face it like a man. Don't come up with some hypocritical excuses to portray him as a good guy.