Dark and twisted BL - with summaries

Rintarou and Natsu are childhood friends who have always been together since they were small. Even after becoming high school students, Natsu is still a crybaby and Rintarou is still affected by his crying face. However, one day Natsu consults Rintarou about a female stalker and asks him. "I want you to pretend to be my lover. Rintarou agrees in order to protect Natsu but he’s perplexed by Natsuk’s “lover's appeal” everyday... Moreover, they even do lewd things

Bad translation. Read freee on Lezhin instead.
During the period of Japanese colonial rule, a young Korean boy, Yonghyun, is invited every summer to a royal residence in the mountains behind his village. The residence of one Count Tachibana. The peculiar Tachibana Sho is a complete mystery, as it seems he’s never left his mansion, not even once. But over the summers, Tachibana Sho and Yonghyun have made a strange but solid bond with each other. Now Yonghyun is devising a plan to help Sho e

A city in a quiet part of the country. There is a huge mansion that symbolizes the city. Yeon-ho is sold to this mansion instead of his fugitive father and he works as an employee there (more like slave I guess). He wants to one day pay off all his debts and leave the mansion...
but the mansion owner’s family proposes a dangerous relationship to Yeon-ho.
"I am the owner of this house. You just have to please me."

After reincarnation Lee Hanyoung remembers his past life as the young master of a noble family who was in love with his manservant who is also reborn as, Jeong Seokhyun ...In their past lives they were unable to have the happy ending so this time Lee Hanyoung will make sure that nothing gets in their way ..

Hyung!" Hae-gyeom fits perfectly like a puzzle in Jihyun's life, who's lost his younger brother, Jihae, during their childhood. One day, Jihyun starts to feel a little strange in Hae-gyeom's behavior, whom he sees as a younger brother. So complex emotions begin to emerge. One day, Hae-gyeom said, "I'll do everything I can to make you see me as only me, no one else."

Let’s play…”
Woo-yeon’s determined to make the world see how awful his brother truly is, but…well, his memory has been really spotty these days and, to top things off, Woo-jin seems to be acting even more smug than usual. Just what is going on in the times Woo-yeon can’t remember, and what does Woo-jin have to do with it?

Katsuragi, an elite office worker who fell from a perfect life, drunkenly attempted to jump and commit suicide. Suddenly, he was helped by a mysterious man, Yoda, but that was the beginning of a horrible life of confinement training...

Adapted into live action.

Yooil was born as a beta to an average family but during his highschool his life took drastic turn & since then he became dependent on his friend ,Cha Hwan(⍺) ,a heir to a wealthy pharmaceutical company..Cha Hwan looks after Yooil's everything from his food to his daily pills ..Soon Yooil manifested as an omega & was fired from his work & as usual Cha Hwan came to offer him a new job at his cafe while Yooil accepted without knowing whats fate awaits him in future .

Before entering the prison 'Myeong-il' was warned to beware of the guy with the "ponytail " but , he accidentally saves the rumored ponytail guy, Jin-gi, from danger & also got involved with his younger brother too.

Yejun, who had always believed he was a beta, found himself unexpectedly in the throes of heat, resulting in the birth of his child during college five years ago - a consequence of his complicated relationship with Do-yoon, his unrequited first love and friends-with-benefits partner. Returning to Korea, Yejun decides to bear the sole responsibility of raising his son in secrecy, keeping the truth hidden from Do-yoon. However, five years later, Yejun crosses paths with the child’s father.