summary: (spoilers, obvs)
ex-girlfriend is a straight bitch and does not try to change for the better at all. Maid is alright, her rudeness to him was essentially her work persona and was to be expected, mostly on the MC for that although the maid isn't exactly doing herself any favours by having a rude personality. His Kouhai was rude to him, but when confronted, properly apologised and tried to change herself (at first).
first chapter or two was good; MC stood up for himself, explained to his Kouhai that she had hurt him and that just because she had problems, it didn't justify the way she treated him. Kouhai acknowledged this and showed with her actions that she was willing to change. I'm all for forgiveness if it feels deserved.
from chapter 3 or so onwards, the entire story devolves to shit. all of a sudden, the MC is apologising for everything, the maid gets little to no comeuppance for her actions, and the ex-girlfriend gives essentially no effort to change and barely acknowledges that what she did was bad. most characters revert to how they acted at the start. the story and interactions are shallow and melodramatic.
genuinely trash story. completely nonsensical and a waste of time. the only reason to read this story is the catharsis from MC airing his grievances in the first chapter or two, and the genuine apology and acknowledgement of wrongdoing by the Kouhai (at first). as soon as that has happened, just drop it.