Hiiro no Kakera(2012)

Hiiro no Kakera is a supernatural anime series following Tamaki Kasuga, who travels to the remote town of Kifumura expecting a quiet stay with her grandmother. Instead, she discovers her true purpose: she is the next Tamayori princess, destined to seal away the cursed sword Onikirimaru. To safeguard her from the dangers this role entails, a group of young male guardians from a rival family are assigned to protect her. As Tamaki navigates her newfound responsibilities and the mysteries surrounding her bloodline, she must learn to trust her protectors while uncovering the secrets of her supernatural heritage. The series blends romance, action, and folklore as Tamaki embraces her destiny.