Fifth season of Date A Live.
A second girl named Shido finds a mysterious girl at the point of explosion due to a space earthquake that happened a long time ago. Shido learns from his sister, Kotori, that the girl is one of the spirits: mysterious creatures caused by space quakes. Shido is recruited to help "seal" and eliminate humanity. But there's one problem: there's only one way to seal a soul—that's by making it fall in love with you.