Part 7/8:

But a new asteroid threat looms on the horizon, forcing UA into a harrowing decision to save Earth by using the warhead for a sacrificial mission. With heavy hearts, he bids farewell to his kangaroo companion and prepares to fulfill this imposition upon himself, fully aware of the consequences. UA embarks on a heroic venture towards the asteroid, becoming a symbol of resilience amidst despair.

In a climactic moment, UA successfully detonates the nuclear device within the asteroid. The resulting explosion provides humanity with a new lease on life yet simultaneously erases UA from existence. His sacrifice inspires survivors back on Earth, who begin to rebuild their world in the aftermath, notably unaware that their savior has gone.