
Ah... about 2/3 of really 'crazy' 'dark' 'rape' stories that I have read are Korean manwhas/webtoons.
Japanese mangas do have "dark" themes. But they are never detailed. They don't prolong the suffering of MC. There is always a "saviour" or a solution in the end.
But in korean manwhas/webtoons, suffering is really too much for my heart. Too long. Too detailed. Too well-planned. Like Killing stalking, warehouse, the perfect realationship and save me. And they are only recently popular too!!!!!
Harada-sensei writes that kind of style too tho'. And......oh.... this seems smiliar to "Zankoku Na Kami Ga Shihai Suru" but a little differnt ( 'cuz the MC seems to like the older seme. )
(I may talk like I am complaining but I actually like those kind of stories. My heart bleeds for them, longs for them and lives for them. (≧∀≦) )

Some mangas are really dark however they usually aren't yaoi ones.
Omega can get pregnant, rt? What if uke sleeps with another guy? (In another story, he slept with another guy) Please seme stop him. May be lock him up. (Hyaaa... I am delusional. I hope I am wrong)