The author stopped caring about the established powerlevels, hierarchy, and prior-relationships of the characters... in other words the context... it's just a bunch of jokes thrown around here and there till eventually the ending... the author uses the fact that he threw out the context to make an unjustifiable development occurs... suddenly, all the characters lose their personalities, and thanks to the author no longer caring about context, the heroine gets a trial that's supposed to justify her change in personality... it honestly doesn't, the change is simply too extreme, and only there to lead up to the ending lover's quarrel, aka the ending... The ending after having forgotten the personalities of every single character and thrown away the context up, the author created a generic ending where the heroine friendzones the protagonist when asked if she'll marry him... the heroine does it in a way that makes it seem like she's being nice but honestly, just no... she acknowledges that her feelings towards him are like that of a lover until then, but she doesn't like him enough anymore and tells him off saying that she doesn't like him enough because... well that would be a spoiler so I won't say why but pretty much she lists a bunch of stuff that when in context consisted of stuff that she either happily agreed to but was unsatisfied with the results of or she was entirely at fault for, ending her rant by saying that as a result he was totally unattractive to her... after recovering from the shock, he tries talking her into wanting to go back to their prior happy way of life even if they're relationship never goes beyond what it already was, so she then proceeds to trample over his emotions till he finally gives up (Honestly he seemed suicidal, since important context was done away with to lead up to this ending he had nothing left anymore), then she says she no longer likes him enough to want to be with him but she likes him enough to become friends...