■ Introducing the Original Story

For around thirty years, Earth has been plagued by spacequakes. These calamities are triggered by the emergence of enigmatic entities known as Spirits. One day, an ordinary student named Shido Itsuka encounters a Spirit disillusioned with humanity. Shido's sister, Kotori, reveals to him that he possesses the unique ability to seal Spirits' powers away.

However, the method is suprising. To seal a Spirit's powers, he has to date her and make her fall for him!

Shido resolves to do whatever it takes to protect the world and save them. He faces the Spirits with total sincerity as he navigates the various challenges that come his way.