今宵、妖しい口づけを

You live a normal life, until the day you’re attacked by otherworldly Ayakashi, who are intent on stealing the special power you were born with. However, your saviors also happen to be Ayakashi, and five very handsome ones at that! You were born with the ability to amplify the power of any Ayakashi. In order to save your life, your Ayakashi marks you with his kiss; and how exactly do you transfer your power to him? Why, also with a kiss, of course!