Kaoruko Mochizuki runs an herb shop in a small seaside town. One day, a mysterious man dressed in black named Kaname Hibiki enters her shop and reveals that Kaoruko is actually a witch. And what's more, Kaoruko needs Kaname to help control her awakening power!

The only thing that can keep Kaoruko's powers in check is a kiss from Kaname, but she can't help but be drawn to him! While Kaname struggles with his own growing attraction to Kaoruko, he suspects that Kaoruko's volatile powers will bring unwanted attention from the Black Witches Coven with dangerous consequences for her!