http://www.mangago.zone/read-manga/kakkou_no_yume/
http://www.mangago.zone/read-manga/kemono_asobi/
Short but i guess theyre pretty angsty
Angst with happy ending
http://www.mangago.zone/read-manga/stigma_marloong/
http://www.mangago.zone/read-manga/lover_boy_lezhin/?JiE2
http://www.mangago.zone/read-manga/bokura_wa_nando_mo_koi_o_suru/
http://www.mangago.zone/read-manga/tamayura_yuki_ringo/
http://www.mangago.zone/read-manga/hana_no_miyako_de/
http://www.mangago.zone/read-manga/tadayoedo_shizumazu_saredo_naki_mo_sezu/
http://www.mangago.zone/read-manga/yume_yume_shinjuu/
http://www.mangago.zone/read-manga/double_mints/
http://www.mangago.zone/read-manga/sakura_gari/
http://www.mangago.zone/read-manga/hana_no_migoro_ni/
http://www.mangago.zone/read-manga/kanashii_kotoba/
http://www.mangago.zone/read-manga/koinegau_horizonte/
http://www.mangago.zone/read-manga/life_senjou_no_bokura/
http://www.mangago.zone/read-manga/blue_lust/
http://www.mangago.zone/read-manga/love_nest_minaduki_yuu/
Any BL manga/hwa/hua that have angsty plot, but still have cute and kilig scenes. And also ends with a happy and satisfying ending.
Something like Dark Heaven.