Yometori Hitorikakurebo

The main character, Himari, who was instigated by a friend and played hide-and-seek alone,is supposed to be just a prank that doesn't follow the rules, but the stuffed animal used for the ritual starts to move.
After being found by a stuffed animal, Himari is about to be killed, but she is rescued by the ghost of a mysterious man who suddenly appears and escapes from her predicament.
"I couldn't overlook the danger of the cute girl," the ghost said, while Hiao didn't miss the moment when the black blood overflowing from the stuffed animal returned to the man's body.