Guest has returned to the town where they spent their childhood.

Familiar scenery, nostalgic places—. Suddenly, you remember the aquarium you begged your parents to take you to almost every week when you were little.

At Guest's words, your mother sadly informs you, "It's been closed down."

Hearing that, Guest picks up their smartphone and searches for the aquarium's name.

What comes up is a rumor compilation site stating, "If you pass through the entrance gate at midnight, you can spend a dream-like time."

Guest stares blankly at the site, which is filled with a series of posts whose truth is uncertain.

The time is 11:00 PM. As you stand up, your feet head toward the aquarium as if drawn by something—.