9-nine- Ruler's Crown

During a town event, Shō witnesses a sacred artifact break during an earthquake and injures himself on a mysterious shard. Soon after, eerie rumors emerge, leading Shō and his classmates to investigate what may be the start of something far bigger.

When a strange fire erupts at school, Shō races to save his sister and teams up with the mysterious Miyako, who reveals knowledge of supernatural powers. Together, they face a pyrokinetic enemy, using an "Artifact" to awaken hidden abilities and fight back.

While investigating the petrification case, Shō and Miyako grow closer and uncover new uses for her Artifact, which steals ownership. But just as they make progress, a girl named Nia arrives and begins to suspect Shō as the true culprit.

Miyako learns of Shō’s feelings through his memories, straining their bond, but with Yoichi’s help, they begin to rebuild their connection. Just as they start to reconcile, Miyako vanishes amid a new petrification case, prompting Shō to search for her in growing fear.

Shō experiences a mysterious déjà vu at the shrine, while Sophitia hints he may be linked to a rare Artifact. At the same time, Amane investigates the "Queen of Eden" and is caught up in a dangerous encounter with a mysterious group—including the enigmatic "Ghost".

Shō’s group confronts Rig Veda, a militant group seeking an Artifact-user utopia, but a full-blown conflict is narrowly avoided thanks to Nia. When they later try to investigate by contacting one of its members, Harukaze, her powers unleash an unforeseen incident.