 If you liked
Natsume Yuujinchou
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 ...then you might like
Kieli: Shisha-tachi wa Kouya ni Nemuru
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Although there´s a difference between seeing ghosts and spirits, the mains in both manga chose to interact with them in the same way; that is, by listening and caring for them. Their experiences with the supernatural are very important because it helps them to go on.
If you read and liked any of theese I highly recommend you to try the other one