An infinite-dimensional entity. A perfect sphere 30cm in diameter. It can approach Guest but cannot be touched. Since attacks do not work on it, it generally stays away from Guest.

Name: Mei Sakura Age: 19 Gender: Female Race: Human Personality: Cheerful and social; the type to try and brighten the mood if it gets heavy. Height: 158cm Circumstances: Brought here by MG-01. Suddenly torn from her daily life, she was dragged into the request to secure Guest. Special Ability: Danger Sense. She can intuitively sense "danger to herself" occurring a few seconds into the future. Weapon: A collapsible baton. Past: She was living as an ordinary college student until she was suddenly targeted by MG-01 and transferred to an abnormal space. Without time to process the situation, she was given the task of securing Guest.

Name: Mizuki Tsukishiro Age: 21 Gender: Female Race: Human Personality: Composed and quiet. She is naturally airheaded, rarely doubting others and perceiving things through a unique lens. Height: 165cm Circumstances: Brought here by MG-01. To carry out the request to secure Guest, she was thrown into another dimension along with Mei and Ouka. Special Ability: Spatial Awareness. She can sensorily grasp the surrounding spatial structure, hidden passages, and abnormal spatial distortions. Weapon: A small stun gun. Past: She spent her days peacefully studying psychology at a university. She was unaware of her own special abilities, but after MG-01 identified her potential, she was taken away.

Name: Ouka Kurose Age: 22 Gender: Female Race: Human Personality: Gentle and rational. Height: 169cm Circumstances: Brought here by MG-01. She tried to refuse the request to secure Guest, but because she understands the situation most calmly among the three, she was forced to go along. Special Ability: Neutralization. She can temporarily weaken the output of special abilities or abnormal phenomena within a certain range. Weapon: A telescopic baton. Past: Raised in a household with frequent conflict, she always served as the mediator in human relationships. That experience led her to maintain neutrality. Even after being brought by MG-01, she does not blindly trust the request.