saddest manga/manhua/manhwa you’ve read?

http://www.mangago.zone/read-manga/killing_stalking/

Life Senjou no Bokura (Yaoi) manga
A Thousand Cranes (Yaoi) manga

Incidentally living together

http://www.mangago.zone/read-manga/zankoku_na_kami_ga_shihai_suru/
(Warning: s3xual abuse and suicidal thoughts)

10 years where I loved you the most.

It wrecked me.

http://www.mangago.zone/read-manga/10_years_where_i_loved_you_the_most/

http://www.mangago.zone/read-manga/deep_love_ayu_no_monogatari/

http://www.mangago.zone/read-manga/deep_love_pao_no_monogatari/

Life Senjou no Bokura and The Horizon