Hajime finally gets to breathe outside the main story's weight, and it costs him everything he's built to protect Myu one last time. The animation snaps awake here in ways the main series never quite managed, especially once the Liberators arrive and the ruin becomes a battleground where past and present collide. This is a side story that knows exactly what it is: a goodbye disguised as an adventure, grounded in the one relationship that actually matters.
Hajime sets out on what should be a simple farewell journey with Myu, but a catastrophic accident tears both of them into a forgotten world frozen in time. The ruins around them hold no answers, only danger. When they stumble upon the Liberators, ancient warriors pulled from centuries past, an unexpected alliance forms. These strangers from different eras must work together to survive, combining their unique skills and knowledge to navigate the crumbling city's deadly secrets. Hajime's overwhelming power clashes against the mystery of how they all arrived here, while the bond between him and Myu deepens under impossible circumstances. The mystery of the ruined city becomes secondary to a more urgent question: can people from completely different times truly trust one another when their survival depends on it? This single-episode adventure balances intense action sequences with quieter moments of connection, offering longtime fans of the franchise a fresh story that examines what happens when Hajime's journey brushes against something far older and stranger than anything he has faced before.