Seishou Academy is a school for very unique girls. Their new homeroom teacher gets a crash course lesson in how special they are, from models numbers to underwear.

Seishou Academy is on their annual retreat. A private beach, fun in the sun, and designated shooting areas makes it an enjoyable time. That was until three students were shot in vital parts and war was declared.

Funco, Ichiroku, Eru and Sig go on a camping trip in the mountains where they do some fishing in the river, smash a watermelon and relax in a hot spring. Later as the girls turn in for the night, Funco and Sig make a promise that they’ll always be together.