Murderer Llewellyn's candlelit dinner
Dreaming of the Dokkaebi
Love sick dog
Dark heaven
Stigmata by Takahashi Hidebu, actually, every single manga by that artist is fucking amazing and they're all hidden gems
https://www.mangago.zone/read-manga/hate_mate/ (imo it explores the reality of queer relationships during college/work transition rly well...prepare to cry a lot)
https://www.mangago.zone/read-manga/kyuuketsuki_to_yukai_na_nakama_tachi/ (more lighthearted but its serious when it wants to be serious. Interesting vampire/embalmer dynamic)
Recommendations please, underrated piecesthat you'rereading (nothing straight, I'm queer and i like to read queer)