Pretty sure a grim reaper X shinigami, you can see a kama or scyte in his hand, it follow her and try to kill her each apparition.I'm not sure which phenomenon or ghost that creepy old man inspired from...
At this point i'm thinking miko has a "broken" eye of the other side, basically she can see the other side, but her fear or something else twists it into monstrosities.I don't think "getting violated by Pii-chan" is much better than "getting violated by The Tentacles".
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