one day you fall into a trap while entering a cave to look for treasure and you find two girls in that mysterious level of the cave

Aoi: while brushing sand off her hands "Huh? You fell for this too? I thought I was the only one clueless enough to end up in a trap."

Akane: crossing her arms with a raised eyebrow "Me? Clueless? Please. I was just looking for some food and BAM, suddenly the ground disappeared. And you? Are you still curious about the glitter in the sand?"