Kagami no Kojou

Kokoro has stopped attending school, and her bedroom has become the only place where she feels safe. One day her mirror begins to glow. Touching it pulls her into a mysterious castle shared by seven students living through similar isolation. A masked girl calling herself the Wolf Queen tells them that a hidden key somewhere inside the castle will grant one wish to whoever finds it.

They may return each day, but everyone must leave before five o'clock or face a deadly punishment. Over time, the castle becomes a refuge they could not find at school, and the seven strangers slowly learn to speak about the pain they hide outside. As Kokoro searches for the key and for the reason they were brought together, she moves closer to a secret connecting their lives in ways none of them expected.