I'm in the lowest rank of the class's military unit. Even I have a girl I admire, Rio-san. She has a boyfriend, Akira-kun, who is in the highest rank unit. Akira-kun is a nice guy who is kind to us in the lowest rank unit. After school, as always, we gathered at Sato-kun's house, which we use as our base. Akira-kun brought Rio-san along. He said something shocking to us: "Hey, do you guys want to see Rio's pussy?"