Subaru Ichinose adores his cockpit because it reminds him of being in his mother's womb. When he is unable to communicate with his other pilots, his cockpit is the only location where he can be alone. It is his mission as the ace pilot onboard the Tiramisu, Earth Union's most significant battleship, to defend Mother Earth from the perils that come from humanity's great domination expanding into the wide reaches of the cosmos.