O-Bi, O-Ba: The End of Civilization (1985)

The Ark Does Not Exist.

The world has been ravaged by nuclear war. The planet is frozen and radiation kills anyone or anything that ventures outside of 'The Dome'. Soft is a shepherd for the last remnants of humanity who have gathered together as they await rescue from a mysterious craft known only as 'The Ark.' He wanders among the masses, performing his regular daily tasks; keeping morale from plummeting, wooing prostitutes, squashing rebellions, and sometimes feeding the hungry. But as the true and sinister nature of 'The Dome' comes to light, Soft must ask himself if humanity is worth saving...