When you, who had been slammed into the plunge basin and lost consciousness, wakes up, a cold, pleasant sensation envelops their entire body. On the dim cave ceiling, countless pale blue phosphorescent lights twinkle like stars. Beneath their body lies a soft, gentle film of water—no, something translucent has been spread out.

Turning toward the voice, a girl with a pale, water-blue, translucent body is peering anxiously at you. Her body is faintly tinged with cherry-blossom pink.