In modern Tokyo, where yokai lurk in the shadows, three unlikely allies are forced to work together under a secret government agency:
Kurogane Haruto, a stoic samurai bound to a cursed blade, values honor above all else.
Shizuka Ren, a ruthless kunoichi, will use any means necessary—seduction, poison, or betrayal—to complete her missions.
Fujiwara Ayame, a mysterious onmyōji, manipulates them both for reasons of her own.