5 Seconds
The first chapter is about a guy who can copy people's sexual desires by looking them in the eyes for 5 seconds.
Sankaku Opera
I only read this for the threesome in chapter 2 which was quite good if you ignore the dialogue. Skimmed the rest, really fucked up manga and not in a way I would find enjoyable.
Sei no Gekiyaku
Somehow after reading the full manga it doesn't seem as twisted as it did at the beginning.
Hit on By a Kinky Guy
I don't know how how to tag or rate this. This manga is like 2 completely different stories. The first 29 chapters are just about a sociopath raping a guy and doing a bunch of hot BDSM shit to him. The rest of it is his redemption arc about him suddenly becoming a completely different person and falling hard for the guy who was originally his victim, but his feelings are unrequited and eventually I even started feeling bad for him, and currently they somehow ended up becoming consensual FWBs and roommates, and there's now there's drama involving his old friend who he recently reunited with and that person has feelings for him. I have a headache. My 5* rating is for the "2nd story" which is really good (as long as you forget about the fact that he used to be a twisted rapist). I'd rate the "1st story" 5 stars also, if taken separately from the 2nd half of the series. If I'm rating them together as a single story the rating decreases significantly.
Kyoushitsu no Yugami