The Oni Mask and Kitsune Mask are the most famous masks in Japan.
Oni are the embodiment of Japanese demons and usually have a reddish face, long teeth, horns, and a sinister expression of anger.
Kitsune are foxes in Japanese tradition, as supernatural beings who have the ability to change forms.
These two masks are often found in every murder victim that occurred in South Korea, which made the Ginseng state police ask for help from the Japanese to help them investigate the case.
The Japanese government also sent Takahashi Shinsuke, one of the best detectives the country has.
Under the leadership of Song Rae-ah and her team: Lee Tae Gyeon, Seung Chan and Moo Tae Gu, they solve a thorny case that eventually leads them to other new problems.
Love blossoms when the investigation takes place.
