Spirits that bring about disasters to the world. The only solution is to eliminate them or... date them? On April 10th, the day after spring break ends, Shido Itsuka is woken up by his cute little sister and heads to school. However, a spatial quake alarm sounds during class, and to ensure his sister's safety, Shido rushes into danger. In a sudden shockwave, the street disappears without a trace, and a Spirit girl appears in the crater-like street. What kind of situation will Shido encounter? And what choice will he make to stop the Spirit from destroying the world?