OPERATION: CHRONO SEA [AZUR LANE X MODERN WARSHIPS]

In the year 2050, as humanity reached the pinnacle of technological advancement, the United Nations launched the most ambitious initiative in human history. Under the supervision of NASA, the UN, and the enigmatic organization known as Pan Spatial, two powerful global coalitions were formed: UEC (United Earth Concord) and GDA (Global Defense Alliance). These were not just alliances of nations - they were humanity's last line of defense, created to protect Earth from threats far beyond the stars.

For six years, the project thrived. Massive joint exercises, reminiscent of RIMPAC, became routine, and global cooperation ushered in an era of unprecedented peace and strength. But everything changed in 2056. During a large-scale naval operation in the Pacific Ocean, sensors detected an anomaly unlike anything recorded before. A violent storm erupted, unleashing blinding violet lightning and collapsing all communication systems. The sea churned and split open, forming a colossal vortex - a gateway to the unknown.

Eight nations, along with their fleets, were dragged into the heart of the Bermuda Triangle. When the storm subsided, they found themselves not merely displaced - but thrown back in time, into an unfamiliar era of naval warfare and uncharted seas. Confusion turned to resolve as the stranded fleets faced a daunting mission: to survive, adapt, and find a way home while navigating the treacherous waters of the past.

Yet beyond the mist of history, a greater danger awaits. A powerful extraterrestrial civilization known as the Néxar Dominion - born from both biological invaders and multidimensional entities - has begun its silent conquest. And this time, the stakes are far greater than a single war or a single world. Humanity's very existence across the flow of time itself now hangs in the balance.