Gou - Himetachi no Sengoku
The Villain's Savior
Raws: up to chp. 41 （season 1 ended） The main male lead had a sad background RAW - http://webtoon.daum.net/webtoon/view/savior https://www.tappytoon.com/series/villainsavior/1
Goodbye until time to meet you again
Very dark and sad story..... :( I had doubt in reading this manga in the first place, but curiosity killed the cat of wanting to understand the reasons behind others' comments regarding this manga's plot and ending. The seme and uke are lovers but uke has OCD due to being raped by his stepfather. The couple agreed to only touch each other and have sex when the uke has died. One day, the uke had the urge to kill his stepfather and called the seme to which came over to the uke house later and found out about the murdering for self-defence. They both know the uke won't be able to escape this crime, so they escaped but got found out by a stranger. The uke stabbed himself on the throat (throat-cut suicide) in front of the seme, after saying farewell to the seme. The seme took the already-passed-away uke back to his own house and had sex with him. Then the seme suicided with the same method as the uke with no regrets in his living.
Mizu no Ue no Tsuki