Mirai, Liko, Kotoha, and Mofurun lost their memories as the cost of escaping from the past. They drifted through their memories as they were unable to remember each other. What is it that they saw there…?

Mirai, Liko, Kotoha, and Mofurun lost their memories as the cost of escaping from the past. They drifted through their memories as they were unable to remember each other. What is it that they saw there…?