I need a manga that will 100% definitely make me cry

http://www.mangago.zone/read-manga/miren_boy_miren_girl/
http://www.mangago.zone/read-manga/sodom_no_hana_ni_kiraboshi/
http://www.mangago.zone/read-manga/december_rain/
http://www.mangago.zone/read-manga/hitori_to_hitori_no_3650nichi/
http://www.mangago.zone/read-manga/rental_onii_chan/
dunno but i sobbed like a biiiiiiich

http://www.mangago.zone/read-manga/let_dai/
saddest I can think of.

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

10 years that I loved you

The wolf lord's lady
Yuusha goikkou no kaerimichi