The protagonist, Tachigare Shikibi, belongs to Okatotoki, a ninja organization operating under the authority of the Public Security Bureau. Together with her partner, the ninja rabbit Inaba, she wages a relentless battle day and night against humanity’s sworn enemy—the Oni.

Under a special mission assigned by her superior, Matsufusa, Shikibi begins infiltrating a secret matchmaking app used by the Oni, gathering intelligence on the high-ranking officers of the Oni faction known as the Onkyo Faction…

The Oni are the hated enemies who devoured Shikibi’s mother. Carrying the hatred and fury buried deep within her heart, Shikibi transforms into “Eiga”, the shadow blossom of Okatotoki, and races through the darkness of the night—!