"For the past ten years, basketball player Lee An has been secretly in love with his hyung, Gunwoo. He has kept his feelings hidden all this time, but when he suddenly hears the news of Gunwoo's divorce, his heart starts to flutter once again! What's more, Gunwoo asks him to become the promotional model for his company? It's a rare opportunity, so he decides to make his move!
“Lately, I— I’ve been so pent up that I have a hard time focusing on basketball...!!!”
Derailed from the path of unrequited love, Off-Track Crush" [MD]

Original Webtoon

Official Translations:
T.Chinese

The official T.Chinese is uncensored.

Original Webtoon:
R19: Ridibooks
R15: Ridibooks

Original Novel:
Ridibooks

Original Novel
Original Webtoon

Note: The series is under the tag "비욘드 하드코어" which means beyond hardcore. Meaning this series is not suitable for everyone and can be very extreme

“Mr. Jung, shall I tell you a story? Something like a fairy tale. A long time ago, there lived a servant named Geolson and a nobleman named Jo Moonyoung. The two of them fell in love at first sight…but their story ends in tragedy.” Two lovers, reborn in the modern age, are once again separated by fate; Jo Moonyoung, now Lee Hanyoung, is the cold and calculating CEO of SB Construction - the same company that is trying to destroy Jung Seokhyun’s neighborhood. But when the two come face to face, Hanyoung realizes that Seokhyun is the very man who haunts his dreams: the reincarnation of Geolson. Convinced that this is his chance to correct the mistakes of his past and hold his forbidden lover in his arms one more, Moonyoung will do whatever it takes to rewrite their fated destiny in pursuit of a brighter future together.

Original Novel:
Ridibooks
Google Books: Vol.1, Vol.2, Vol.3, Side Story

Original Webtoon:
R19: Ridibooks, MrBlue, Bomtoon,

Original Novel

Original Webtoon:
R19: Ridibooks, MrBlue, Naver Series, BookCube, Lezhin, Peanutoon
R15: Ridibooks, MrBlue, Naver Series, BookCube, Lezhin, Peanutoon

Official Translations:
R15: Thai

Saying bye-bye to Earth and blasting off to school in space was a dream come true for Nux. But no one told him how mediocre he would seem stacked up against the brightest minds in the universe. With lackluster grades that could never afford him a scholarship, he's forced into illegal part-time work just to pay the bills. But when a handsome alien propositions him with an offer to make his money problems disappear, he realizes it comes at an astronomical price.

Original Webnovel:
Ridibooks

Original Webtoon:
Ridibooks, Bomtoon, MrBlue, Naver Series, Comico, BookCube, Lezhin, Peanutoon

Official Translations:
English, French, German, Japanese

Joo Yeomin is a hardworking college student that works day and night. He's also becoming an expert at running away from the loan sharks...'Huh... Didn't I see that person yesterday?' One day, a suspicious man keeps showing up at Yeomin's part-time jobs.
"We know each other, right?"
"No, we don't! Why do you keep following me?"
What possibilities could come of the chase between the part-timer and the suspicious Chaebol?

Original Webtoon

Su-hyeon is dating his university senior, Ji-ho, but somehow still feels lonely. Ha-neul, a third-year highschooler who has an unrequited love for Su-hyeon, is always eagerly awaiting his tutoring time with Su-hyeon. One day Ha-neul confesses to Su-hyeon but is rejected since Su-hyeon can only see him as a cute student and little brother. The two of them go back to their everyday lives but as time goes on, Su-hyeon who is stuck in his tough everyday life, and his former student Ha-neul are reunited in a department office he is visiting…

Original Webtoon

Jeong-yoon has harbored a crush on Chae-heon all through high school and now college. Despite ‘fate’ always bringing them together, Jeong-yoon hasn’t been able to become close to Chae-heon, much less tell the latter about his feelings. This is mainly because he is convinced that Chae-heon doesn’t like him. But unbeknownst to Jeong-yoon, Chae-heon is not without his own complaints. Will the two resolve ever their misunderstandings and will love, which has been put on hold for so long, finally begin?

Original Novel
Audio Drama
Original Webtoon

Official Translations:
English, French, Spanish

The official Spanish and English are uncensored (fully drawn genitals). The R19 content begins in season 2.

Original Webtoon:
Lezhin, Bomtoon