I'm in the lowest-ranked group in my class. But there's a girl I admire. Her name is Rio. She has a boyfriend, Akira, who is in the top-ranked group. Akira is a good guy who is kind to us, even though we're in the lowest-ranked group. After school, we were gathering at Sato's house, which we use as our hideout, as usual, when Akira showed up with Rio. Akira said something shocking to us: "Hey, guys, do you want to see Rio's pussy?"