On July 27th, university student Aoi Hinata has an accident. When she wakes up, Aoi Hinata finds herself in a classroom from one week before the accident.

Teenager Kazuki Miyaichi has always felt unloved by her mother due the circumstances surrounding her birth. Because she harbors anxiety and perceives herself as being worthless to others, she engages…

An attack takes place on Rainbow Bridge in Odaiba, Tokyo by the fighter helicopter `Gray Ghost`. 2 days earlier, the Gray Ghost was stolen. The perpetrators are followers of Yukihito…