It was good (?) then half way through it became weird

I came into this story thinking oh wow a cute puppy seme and a boss uke (reminded me so much of Unromantic) BUT you'll come out thinking WTF just happened.

(Spoiler)

There was emotional incest. Then last few chapters were also so crazy with the whole collar and locked up basement thing. I mean the whole story is so crazy... the seme basically has Stockholm syndrome.