Sad manga???

https://www.mangago.me/read-manga/tale_of_the_yellow_dragon/

the horizon, my broken mariko, three days of happiness and goodnight punpun

https://www.mangago.me/r/l_search/?name=Avogado6

I cried a lot reading 10 years where I loved you the most

Banana fish and try reading Avogado6's works

http://www.mangago.me/home/mangalist/1090460/

http://www.mangago.me/home/mangalist/1103164/

http://www.mangago.me/home/mangalist/636848/

https://www.mangago.me/home/mangalist/957720/