Netorase is when your wife/girlfriend or whatever willingly sleeps with other people on your request and still chooses to stay by your side even if the sex is mindblowing + retaining the love for you and still acting like a couple, which doesnt happen in this game.
I'm sorry, I know what you're tying to get at, but your presumption of Netorase always ending up on a happy note is self enforced. No where is it written that Netorase almost always has to end on the couple staying together at the end. Yes, it's that quirk that gives this genre its unique distinction from Netorare or Netori, hence why MOST content ends out playing like so, but it's not the absolute rule. Free free to check
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definition if you disagree. This is why some stories skate with the idea that if the protagonist makes stupid choices and decisions that adversely strain the marital bonds, he runs a high risk of losing his significant other, which makes sense.
From my perspective, this is a Netorare/Netorase hybrid. Rare stuff, but pretty valid and touches both genres in different sections of the story. Honestly, I had dropped this long ago because the MTL was headache inducing, but I picked up the game again to check some technical issues, so I decided to at least sit through the asshole boss's route and sure enough, it starts as Netorase and eventually turns into Netorare. Now I couldn't play this in detail but the game does give this feeling that you MIGHT be able to salvage your relationship if you have regular sex with her, message back promptly and choose the loving choice options. I can't confirm this since I couldn't be arsed to replay the entire thing to pick those choices, but the presence of that system does hint that it might have been setup to not always be a Netorare bad end.
MC takes his break and goes to the other room, the arrows that allows you to exit the room disappeared and the boss isn't there either so I got stuck there.
So I got curious and picked the game out of the bin just to figure out what the deal was, and indeed, the MTL hero broke... something that I didn't encounter in the JP version. If you save your wife, the guy straight up bugs and takes the break room arrows with him and you get softlocked. You have no choice but
Noted a few other oddities like blinking circle on the office wall, the wife's sprite still in the drawing room even though the text says she is having sex in the bedroom, the auto entrance to the home not working the first time you're alone etc. I'm not a RPG techie but it does seem the game's code is haywire now in some areas.