i think every thing has a happy ending except for the 1st. 3rd is ongoing so no clue what the ending will be. https://www.mangago.zone/read-manga/loveless_1/
https://www.mangago.zone/read-manga/reunion/
https://www.mangago.zone/read-manga/sangyang_the_wanderer/
https://www.mangago.zone/read-manga/murderer_llewellyn_s_enchanting_dinner_invitation/
Yaoi/Shounen Ai:
https://www.mangago.zone/read-manga/darkness_before_the_dawn/
Not the emotional emotional type but it's sad: https://www.mangago.zone/read-manga/camellia_minami/
https://www.mangago.zone/read-manga/mouth_to_mouse/
https://www.mangago.zone/read-manga/spring_snow_odongtong/
Have you read Sangyang:The Wanderer? (⊙…⊙ )
manwha or manga thats gut wrenching angst that would make you cry pls, something like “10 years where I lived you the most”