No soul lamp is used to basically see if a person is alive or dead. No matter how far that person goes the lamp will keeps telling if the person is safe.
Komo desu ga nani ka? Read the LN. I haven't read the WN. Also if you want to you can watch the anime.
Spider Queen.
Maybe ... Ending Maker? it has a male and female lead
and yeah Nanomancer Reborn
