On a normal morning, Haruka's boyfriend Keita dies suddenly in front of her.
However, Haruka realizes that she can go back in time to two days before Keita's car accident, and she stands alone to avoid her lover's death this time.

"Keita's death is not fate. This Refrain is a chance given by God!"

With the repeated deaths of her boyfriend and time warps, what will be her final decision?! This is a bitter, sad, and ironic adolescent sci-fi rom-com.