かがみの孤城

Anzai Kokoro, a middle school girl who has withdrawn from school due to bullying, spends her days isolated at home until a glowing mirror in her room transports her to a mysterious castle. There, she meets six other kids—each facing their own struggles—guided by a wolf-masked girl who gives them until March to find a key that grants a wish. As Kokoro bonds with her new companions, including the quiet Rion and the cheerful Aki, this heartfelt tale blends mystery, friendship, and healing, following a group of teens uncovering their pasts and finding strength in each other within the enigmatic walls of a lonely castle. (Summary by Grok 2)