Pls and thx

Jack (7)

I meant
mob for jack (rating 7)

I actually have a list. http://www.mangago.zone/home/mangalist/106101/

there are several in there (about 40) some are fucked up and some are just... like... I found it really good but like some people might wouldn't. If you'd like you can look through that. Sadly I don't have ratings for how fucked up they are.

Zaria Ranmaru has a lot of fucked up stuff, but it's still hot. What do you mean by fucked up? There's Nishimura Shuuko, who really likes to humiliate ukes:
http://www.mangago.zone/read-manga/tour_shangri_la/
http://www.mangago.zone/read-manga/go_con_gokujou_rakuen_tours/
http://www.mangago.zone/read-manga/kishidou_club_bangaihen/
It isn't extreme BDSM, torture porn or worse, but there are public gang-bangs.

This story is so bad, it's almost comic:
http://www.mangago.zone/read-manga/koi_ni_narumade/
There are a lot of those type under the bara category, with dudes that are practically swimming in the ropes of jizz they pump out. This is one which would qualify: http://www.mangago.zone/read-manga/priapus/

Otherwise, I would just do a tag search for your kinks and fetishes, whatever they are.

can haru have sex with rin after turning into an odd little lifeform. its cutely fucked up.

On a scale of 1 - 10, this one rates a 20 for fucked up:
http://www.mangago.zone/read-manga/host_in_down/
I seriously wish I never read it.

Nii-chan (8)

zaria? fucked up? no way ahahhha. she's probably one of the more sane one out there among the popular mangakas.

http://www.mangago.zone/read-manga/heartless/

Not really sure what this will become since it only has 1 chapter but it's pretty creepy

I said some of her stuff is, not her. I wouldn't call Mob for Jack light-hearted fluff. Pet Keikakyu with the sex slaves and their cock-rings were straight out of Ai no Kusabi, which was great yaoi and hot as hell, but definitely fucked up. How about the story about the philanthropist who uses his donations to a monastery to rape-not-rape one of the monks with a banana, and the tacit approval of all those other monks? Not the least bit fucked up, right?

Gintama dj, where gintoki has a leash in his hand. (8)(๑•ㅂ•)و✧

i have so many more but I'm lazy to list em off m8 srry

mob for jack is a personal fave of mine. not in the deep-end fucked up but... hardcore smut? i think i'd describe zaria as that. there is a thin line that separates hardcore smut and fucked-up and sometimes they do blend together in some levels but in a way, they are sort of a different genre. fucked-up, twisted mangas usually had that psychological/criminal element to them. it's hard to describe but they had a different... aura? atmosphere? it also has to do with the art style. try reading harada's suimenka. it's not even hardcore but it is fucked up.

since i'm also here i might as well rec some but not too sure if your tastes jive with mine.
i like this one. 10/10
http://www.mangago.zone/read-manga/akaneshinchi_hanaya_sange/
this is also one of my fav. fucked up 10/10
https://myreadingmanga.info/seki-sabato-tsukuru-tousan-to-boku-to-eng/
9/10 and it has a sequel.
http://www.mangago.zone/read-manga/venus_ni_seppun/

try reading that orc bride in MRM too, it's fun. it's got bestiality and gore. 10/10

I hear you, Takame, but let's say my barometer is gauged a little differently. I throw hardcore smut into the fucked up category if cruelty and the desire to humiliate or degrade the uke overrides the traditional romance trope of love conquering all. Now, I didn't get the love (or aftercare) in Jack's gangbang. Maybe it was there, but I didn't catch it. But I do agree that there are levels of fucked up. I don't need to go into suimenka to find the deeper ones. Maybe the OP will like it, though.

Take care.

jack? nah, it's just gangbang. true blue yaoi for smut's sake i should say. there's love in suimenka tho, it's just a oneshot and maybe you will rage up on seme but his is an obsessive-manipulative love... i could say there's an aftercare since he only cares for the uke and is terrible to anyone else. and who knows? you might be ok with it since you read kishidou bangaihen. (⌒▽⌒) the seme is just two or three notches up the asshole level as the seme from the latter. http://www.mangago.zone/read-manga/suimenka/