Responses
But honestly, many webtoons these days are not that sad or depressing (golden age circa 2014) so I suggest u start reading chinese/japanese/korean webnovels. There are so many. 11 years where I loved you the most is one that is currently being translated, so u can start looking at tragedy tags on novelupdates.com
Personally, try the blind concubine. Cried myself to sleep on that one
I know one but it's not a comic.
https://www.novelupdates.com/series/gaze-at-the-scenes-of-debauchery/
Is there anything like 10 Years Where I Loved You The Most ?