 If you liked
Shigofumi: Stories of Last Letter
|
 ...then you might like
Epitaph
|
Both are about delivering the last wills of the deceased. Also, Fumika and Asche have insanely similar characteristics:
Mysterious past
Serious personality and job-oriented
Have a cute side
Armed with a gun
While Shigofumi directly shows the supernatural, Epitaph has a supernatural feel to it.