If you're looking for manga similar to The Voice of Tsukumo, you might like these titles.
"Hey, do you know?" Someone told about "Yoriko", which is not in the world. A scary and sad ghostly series.
The manga tells the story of Ryo Utsugi, a student who finds himself in the body of an ancient demon known as Dante and sees himself in the middle of a conflict between God and the devils.
At 1 am in the middle of the night, Mana, who went to a convenience store, encountered a fear that made her miss her boring daily life. What on earth...!?