you probably have read these 2 but Id go for my all timr favorite Warehouse and dark heaven. Boys of the dead also
TEARJERKER
http://www.mangago.zone/home/mangalist/636848/
list is a collection of
• happy ending
• bittersweet
• sad/tragic
i recommend this for quick read
#021 http://www.mangago.zone/read-manga/hate_no_kouya_de_vacances_wo/
#031 http://www.mangago.zone/read-manga/the_specific_heat_capacity_of_love/
You can check the comments section if you want to know which mangas have happy/bittersweet/tragic ending
Follow the list to be updated. And if you liked the mangas/manhwas I included, please do recommend. Enjoy~ (人 •ᴗ•)
tragedy bl or gl? less on the popular side since i’ve read a few