A boy walks into a room full of girls who have all the power, and suddenly he's the only one who matters. The show knows exactly what it is, a machine built to run romantic comedy through different character archetypes at maximum speed, no apologies. If you're watching for plot, you're in the wrong room; if you're watching for the specific dopamine hit of a harem where every girl has a defined type and a reason to orbit the protagonist, this hits on pure formula efficiency.

Powered exoskeletons called Infinite Stratos have reshaped civilization, but with one catch: only women can pilot them. This technological monopoly has shifted the entire balance of power, leaving men on the sidelines of society. Then Ichika, an ordinary fifteen-year-old boy, stumbles into a training academy for IS pilots and somehow manages to activate one of these supposedly female-only machines. As the only male able to operate an IS, he is made to enroll at the IS Academy, an all-female boarding school that trains future pilots. There he meets his childhood friends Houki and Lingyin again, befriends Cecilia, a representative pilot from the United Kingdom, and answers to his older sister Chifuyu, a legendary pilot who serves as their strict homeroom teacher. The series balances mecha action with comedy and romance as Ichika tries to survive academy life while becoming something no one expected: a male Infinite Stratos pilot.