This is not an adaptation but I cannot help myself from comparing this story with a web novel which has very similar plot (a sick uke who hides his illness from his long-term cheating boyfriend). It is called Gaze at the Scene of Debauchery, if you are fond of sad story this is perfect ! https://www.novelupdates.com/series/gaze-at-the-scenes-of-debauchery/
This is not an adaptation but I cannot help myself from comparing this story with a web novel which has very similar plot (a sick uke who hides his illness from his long-term cheating boyfriend). It is called Gaze at the Scene of Debauchery, if you are fond of sad story this is perfect !
https://www.novelupdates.com/series/gaze-at-the-scenes-of-debauchery/