Rokuro-kubi
... Flying spirit with a grudge

Rokuro-kubi can fly quite a long distance, separating her face and neck from her body.
She looks completely normal during the day. However, her neck becomes thinner and longer while she sleeps.
Her neck grows long enough to allow her to go and see the man she loves. Hiding herself, Rokuro-kubi looks at him.
On the other hand, she tenaciously tails people she has a grudge against and moves around them freely.

Odori-kubi
@Odori-kubi is a neck separated from the body.
The neck, which is sometimes that of a giant woman's or a fleeing soldier from a defeated army, flies around.
As he/she experiences a deep feelings of love and hatred or a strong grudge, his/her neck becomes huge and appears in front of you ...

Furaribi^Sogembi
@Furaribi is a ball of fire from a dead person for whom nobody held a memorial service.
Sogembi is that of a person who died an unnatural death.
His sad and furious face expressing his grudge becomes Sogembi.
These balls of fire continue to wander aimlessly around the world.