Boku dake ga 17-sai no Sekai de (2020)

Both dramas start with two classmates falling in love and one of them tragically dying and mysteriously back to life, making them experience what could have been and ultimately coming to terms with everything and being able to let go.

Differences:
Eien no Kinou is a BL.
In Boku Dake ga 17sai no Sekai de, there is a time skip of several years, before the decaesed comes back.

I believe both has the same vibe. The plot is different but the feeling is pretty much the same.