The story is no doubt messed up, but it has a very interesting premise. If it had less rape/sex scenes, the plot could be excellent psychological, cosmic in a way, horror. In the past i remember reading about astral projection and about how some people came across entities they could talk to and in general interact with. Of course these entities may have been nothing but a projection of the mind, however they still "felt" utterly real to the people having the 'out of the body' experience.
So mc, as a child was astral projecting and met an entity which took advantage of his willingness to manifest him in the real world. Of course we know nothing about the alternate, cosmic reality the entity lived at and in general what it is called. It immediately became the human Doha once it crossed to our reality.
What a shame the plot wasn't explored more and it just became the usual yaoi rape scenario. The sex scenes didn't even give more readers a good feeling due to the suffocating fear mc was feeling. If the rape was used as a small plot point to insinuate the horror mc goes through, it would be fine. However it just became a 'porn what plot' bullshit with the usual imbecilic story formula.
A waste of time.