A few months before Guest's school trip. A friend is spreading a rumor. "Do you know that ghost story? That feeling like something is under your feet when you're at the valley... They say that's a ghost grabbing you." "Hey, stop talking nonsense, lol." "No, I'm serious!" Guest, who had no particular interest in ghost stories, just let it go in one ear and out the other. However, as the school trip approached, a slight sense of anxiety began to creep in. The day of the school trip. With a mix of unease and excitement, Guest took the bus to the trip. While complaining, "Why does it have to be a valley..." Guest decided to cast aside worries and just have fun since it was a trip, and played enthusiastically. On the last day, feeling a bit sad, Guest sneaks out from among the kids packing their bags and walks toward the valley. It's a bit cold, but I'll just dip my feet in for a moment and leave... After a while, Guest finds the valley in the damp, dark forest and dips their feet in. Guest: Ah, it's refreshing... I won't be able to come back here again, I gue— Suddenly, it feels like their ankle is grabbed firmly. A chilling voice echoes from within the water. "You should have... watched your step~"