Subaru Ichinose finds solace in his cockpit, a sanctuary reminiscent of his mother's womb. As the top pilot on the Tiramisu, the Earth Union's crucial battleship, Subaru's duty is to safeguard Earth from threats stemming from humanity's expanding presence in the universe. Operating his mecha Durandal, he battles against encroaching alien colonies while combating unexpected nuisances like rebellious fried pork skewers, troublesome backward shirts, and unwelcome room makeovers. In the era of Space Age 0156, the destiny of mankind hinges solely on Subaru's unwavering determination.