Locked up in a Temple for a long time. Jace was released by Anita who was trying to write a project for her history class so has to be able to join the school play.
Jace gave Anita his fox bead in other to save her after falling from the top of the mountain.
Jace followed Anita to her school and started living with her because of his fox bead that with Anita

My boyfriend is a nine-tailed fox

Chapter 88: The Return of the Forgotten 


The room grew colder with each passing second, the shadows pooling around the figure like a living entity. Anita's grip tightened on her blade, her instincts screaming for action, but Jace stepped in front of her, his eyes locked on the figure who had once been a part of his past—a past he had desperately tried to bury. 


“You... should have stayed dead,” Jace’s voice was barely a whisper, his breath shaky as memories he thought were long buried resurfaced. His eyes darted to the familiar face—the face of someone who had betrayed him in the most unforgivable way. The last thing he wanted to see tonight was the person who had nearly destroyed him years ago. 


The figure smiled, a twisted grin full of malice and contempt. "Oh, Jace, I never really died, did I? I just... waited. For the right time to return." 


Anita stepped forward, sensing the gravity of the situation. "Who is this? What does he want with Jace?" 


Chapter 88: the return of the forgotten