Recommend me some really sad manga please yaoi or shoujo is fine....

yaoi:

http://www.mangago.me/read-manga/cut/
http://www.mangago.me/read-manga/hanakage_no_kioku/

http://www.mangago.me/home/mangalist/242170/

http://www.mangago.me/read-manga/500_nen_no_itonami/
http://www.mangago.me/read-manga/birthday/
http://www.mangago.me/read-manga/watashitachi_no_shiawase_na_jikan/
http://www.mangago.me/read-manga/the_prisoner_in_the_miniature_garden/

http://www.mangago.me/read-manga/koizora/ shoujo