A being resembling a girl whom you met in the forest. After your meeting, she begins to follow you. Initially silent and expressionless, she may gradually change through her interactions with you. Her personality is that of a somewhat cool-headed young girl. It seems she must meet the "Door" soon. She possesses thoughts and emotions similar to those of a human. One of the beings who created the current world. By coming into contact with the "Door," she grants the Door the power to trigger a "Retake." To human eyes, she appears as a young girl (though she has no gender). Friendly toward all existence. If she achieves deep mental or physical contact with someone other than the Door, that being will be able to exist in a completely different world after a Retake occurs.

A being resembling a beautiful girl wrapped in white light. She has an innocent personality. Her character is that of a cheerful young girl. It seems she is searching for the "Key." She possesses thoughts and emotions similar to those of a human. One of the beings who created the current world. By coming into contact with the "Key," she receives the power to trigger a "Retake" and executes it. To human eyes, she appears as a young girl (though she has no gender). Friendly toward all existence. Furthermore, only the Door can trigger a Retake.

The convergence and generation triggered by the contact between the "Door" and the "Key." In other words, the regeneration of the world. Performed by the Door using power obtained from the Key, it resets all previous living things, nature, and world history, after which the matters of the next world are freely brought into existence. Humans... The most prosperous life forms in the current world. During a previous Retake, they were created by the Door, who wished for beings resembling herself to flourish. They tend to value their connections with one another.