Shoulder Wars has taken a turn for the extreme as the Chairman's helicopter is about to crash into the academy! Time is of the essence, but who will survive?! It's the conclusion to the Sports Festival arc!

On the outskirts of Tokyo stands Hachimitsu Private Academy, anall-girls boarding school for elite young women. But as the new school year rolls around, one tradition is going out the window: For the first time in the school's long history, boys are being allowed to enroll. On the first day of school, though, it turns out only five boys have made the cut. Thrilled by this discovery, these young men's adolescent hearts leap with joy at the thought of being surrounded by all those girls, but little do the five boys suspect the shocking fate that awaits them...

An unthinkable "nightmare scenario" is brought down on the Shadow Student Council, shaking the Prison to its core...!! Kiyoshi falls into the trap laid by Kate, the Regular Student Council President, and finds himself behind bars once again! Now Mari, Meiko, and Kiyoshi must share a co-ed Prison. Meanwhile, Kate's plan for revenge is quietly set into motion...!

Time is running out for the five boys of Hachimitsu Private Academy! With their expulsion looming, it's time to stake life and limb on making a prison break and baring the Shadow Student Council's misdeeds! And having challenged the vice president to an arm wrestling match, they might actually lose those limbs...

The day of the cornered male prisoners' expulsion comes and goes, and the tale takes a new turn as the roiling fates of both the boys and the girls play out! Kiyoshi and company finally break out of prison and are hard at work enjoying their peaceful school lives...but a storm is brewing, and Mari, Meiko, and Hana of the Shadow Student Council find themselves behind bars!

Time is running out for the five boys of Hachimitsu Private Academy! With their expulsion looming, it's time to stake life and limb on making a prison break and baring the Shadow Student Council's misdeeds! And having challenged the vice president to an arm wrestling match, they might actually lose those limbs...

On the outskirts of Tokyo stands Hachimitsu Private Academy, anall-girls boarding school for elite young women. But as the new school year rolls around, one tradition is going out the window: For the first time in the school's long history, boys are being allowed to enroll. On the first day of school, though, it turns out only five boys have made the cut. Thrilled by this discovery, these young men's adolescent hearts leap with joy at the thought of being surrounded by all those girls, but little do the five boys suspect the shocking fate that awaits them...