Azusa lives for only one man: Chika-kun, the cutest and most popular star in the idol group Prince 4 U. She goes to the shows. She watches the interviews. She ropes in her long-suffering best friend and makes him stand in line at dawn to buy the latest exclusive merch. But one concert changes her life, when she accidentally dies trying (and failing) to save his life! It turns out it was all a mix-up, and God agrees to return the two of them to Earth... but fate's mistakes don't end there, as they each wake up in the other's body! To make matters even weirder, they discover they can switch back and forth by kissing! What on Earth does heaven have in store for them?