Kouta from Matsushiro is smitten with a beautiful but distant classmate. Sasara is a self-proclaimed angel who swoops in to assist him. However, her love spells come with a catch; they only work after a countdown from ten to zero using specific techniques. This results in inevitable complications in Kouta's life. Meanwhile, he is oblivious to the romantic feelings of his cute childhood friend and the fact that Sasara is not the only one of her kind. The ensuing chaos is hilarious.