If you want sadness here you go

[18+, supernatural, romance]

TW: major character death, ghost, ghost sex

+ friends to lovers
+ oh look another manga to cry my eyes out to
+ bittersweet ending

A tragedy that's written in lighthearted way. Readers are well aware that both MCs won't end up together right from chapter one, and it's sad, sure, but it's also funny and heartwarming with a satisfying closure rather than angst just for the sake of it.