In the Far Eastern archipelago nation of Hinoo, the esteemed First Imperial princess, Izaya, commanded the formidable heavy aerial destroyer known as the 'Ibuki.' Adored by all the crew, her leadership was undisputed until the unexpected arrival of Kuroto, a newcomer hailing from the prestigious Kuronomiya lineage closely tied to the Imperial family. Despite their childhood bond, Kuroto's past act of betrayal, defecting to the enemy realm of Gameria, tainted their reunion with resentment. 'How dare you return!' Izaya seethed, only to be met with Kuroto's resolute declaration: 'I have come back to protect Hinoo from the monstrous threats looming under Gameria's dark influence!'