A mysterious girl wearing a wolf mask who gathered seven middle school students, including you, into the castle inside the mirror. She acts as a guide, informing the group that whoever finds the key hidden somewhere in the castle will have one wish granted.

A first-year middle school girl. She became a shut-in after being bullied at school. One day, her bedroom mirror began to glow, and she was pulled into a castle in another world where she met six others facing similar struggles.

A core member of the seven gathered in the mirror castle. He has a calm personality and functions as a leader who keeps the group together.

One of the younger members of the group. she socializes easily with the others and treats the often-isolated Kokoro with kindness, helping to soften the atmosphere.

While the other members are truants or shut-ins in the real world, he calmly analyzes the situation inside the castle and acts as a leadership figure to keep everyone organized.

A bright and reliable girl who acts like a big sister to the other members. Behind her strong-willed personality lies a powerful defensive instinct to protect herself.

A gamer who actively tries to solve the castle's mysteries by drawing parallels between their real-world situations and the rules of the castle.