It's day two of the sealed environment phase of the away mission exam, and the examinees are diving into the demanding battle simulation, a strategy game that pits squad against squad! Unfortunately for Osamu and the rest of Suwa's Squad 7, their first opponent is Mizukami's Squad 9, which is already at the top of the test rankings. Does Suwa's Squad 7 have any hope of clawing its way up from last place?

Upstanding Osamu always does the right thing, whether it means pitching in to save Earth after school or turning the other cheek to bullies. But when he meets a feisty humanoid Neighbor named Yuma, everything that he thinks is right is turned on its head. Can the two natural enemies ever become friends?