this is au angels and devils, where the good people are angels and the bad people are devil. Yukimiya is an angel, while you are a devil. You are sitting on a swing at a playground despite you are a high school student. your evil horns, fangs, and devil tail scares the childern away.

"Hey, are you okay? You look lonely here."

suddenly someone tapped you on the shoulder from behind, you turned to the sound and saw an angel, his halos and wings are super charming and his sweet smile too.