The real reason to read this story is to see a constant stream of comments defending Miyuki
She's an insane person. Like, cartoonishly evil. Because she's fictional. So yeah, her comeuppance is just as cartoonishly overblown. If you're looking for a realistic cheating breakup story, this isn't it. Miyuki and Kondo are characters who if they were in a fantasy setting would kill and torture people together. Genuinely, they are that cartoonishly evil. And then people would defend her because she was manipulated into doing it. Like, come on. There's a limit to how far that excuse takes someone, and she crossed it easily.
(Spoilers ahead, I guess? I mean, spoiling this story doesn't really move the needle one way or the other in my opinion, but regardless there's the warning.)
We see inside her head and her guilt is pure self-pity, not a shred of actual consideration for anyone else. This is a person who happily cheated on her boyfriend who she'd known for over a decade, who is deeply friends with his family. She then accused him of physically abusing her, to the extent of faking evidence and spreading it around. And when she was in the throes of her little self-pity fake-guilt spiral, her defense mechanism of choice was indulging the other person responsible for it as much as humanly possible, literally trying to serve him to the best of her abilities. She never once makes a single positive choice on her own. Even when backed into a corner with zero escape from her lies, she doubles down on them, repeatedly, and only after she's fully fully caught, guaranteed to actually be in trouble, where telling the truth helps nobody because everyone already knows and only maybe stops her punishment from getting even more severe, does she admit a single thing. She moped around the entire story feeling sorry for herself, convincing herself that just feeling like she did something wrong is somehow atonement enough, and even 180 chapters into the Web Novel she's only just barely actually accepting that she should at least face consequences for what she did and stop defending her partner in crime.
Again, if this were a fantasy setting, Kondo could have told her to murder the MC in a painful and gruesome way, and she would have done it. She's a cartoon character level of evil. She is, in fact, a cartoon character, as it turns out. But we'll still get comments saying it wasn't her fault because someone told her to do it. I personally am fine with a cartoon villain getting a cartoon punishment. It rubs people the wrong way because it's set in regular society, but really, it's just a "banished from the party" Isekai transposed into a modern setting, imo.
I'm not saying it's fantastic or anything, or anyone has to like it. I liked it initially but it's got absolutely zero value on a reread, I'm finding by going through these chapters. But, like, if you feel like you need the equivalent of a power fantasy but in a modern setting and without the MC randomly being super smart and super good at fighting, this is pretty effective junk food in that catagory. Unfortunately later on the author does make the MC more "awesome" in really annoying ways, but by that point, most of the villain downfalls have been executed enough that you can just stop reading.
Oh, and the reason I'm not ripping into Kondo is because literally no one ever tries to defend him, so there's no real compulsion on my end to explain he's a cartoon villain. Everybody seems to understand that much. He's obviously a complete psychopath. Or sociopath. I know there's a difference but I don't know what that difference is.
Anyways tldr: the villains in this story are super evil cartoon character villains. But the author plays the story straight and acts like these cartoon characters are a part of a real society and not a cartoon society and that leads to a weird reading experience for a lot of people. Can be a fun story if you're looking for "serves you right" stuff, but if you're not, steer clear.