"My love for you began with that kiss." Ex-Kendo practitioner Kanemori Tōya, comes across Saya who seals demonic blades. Saving him from his murderous impulse curse is a kiss from Saya!? The two begin living together, battling with demonic blade in hand. Break the curse with a kiss from this beauty!
"At this rate, you will die in seven days." Ex-Kendo practitioner Kanemori Tōya has dispelled the seal on the forbidden shrine, leading to his meeting with Saya, a girl carrying a sword. Being obssessed with swords, he unconciously reached out for the blade but...it was a cursed blade that awakened in him an urge to murder. What ended up saving him was a kiss from Saya!? "Please work with me to destroy the demonic blades" Saya's kiss had the special power to undo the curse. The two deepen their bond as they lived together under one roof, using the demonic blade to battle the demons in their path. However, slowly the meaning behind the kiss seemed to be slowly changing? Getting plenty of kisses from a beauty while becoming a demonic blade wielder, an unforgettable romantic experience is about to begin.