Leaves you feeling happy but a bit empty after reading: Hate Mate - https://www.mangago.zone/read-manga/hate_mate/
Had a bittersweet taste after reading: Kimi no Yume o Mite Iru - https://www.mangago.zone/read-manga/kimi_no_yume_o_mite_iru/
Watching them grow old together gives a heartwarming feeling: Life Senjou no Bokura - https://www.mangago.zone/read-manga/life_senjou_no_bokura/
Changing for the better: MODS - https://www.mangago.zone/read-manga/mods/
This is a one shot, but it’s SUPER bittersweet: My Childhood Friend Was a God - https://www.mangago.zone/read-manga/my_childhood_friend_was_a_god/
Childhood friends reuniting: See you later, Mermaid - https://www.mangago.zone/read-manga/see_you_later_mermaid/
Right person, wrong time... literally: Golden Days - https://www.mangago.zone/read-manga/golden_days/
What would you do if you were the only person in the world who could lie?: Truth or Dare - https://www.mangago.zone/read-manga/truth_or_dare/
Can anyone recommend me any manga/manhwa/manhua which are completed and are very engaging? Like angsty or with a really interesting plot. Like mangas with horror, thriller, action, romance genre. Though others are welcomed as long as plot is good. Preferably BL but GL, BG, are also welcomed ⁄(⁄ ⁄·⁄ω⁄·⁄ ⁄)⁄