Natsuki decides to head back to the Academy on the mainland to study humanoids. He decides to leave the salvaging service in Ryuuji's hands, and while he's tidying up the ship in order to pass it on to him.

Only three days remain. Atri decides to become a part of Eden's system, and the clock ticks on for Natsuki who decides to spend his life looking for a way to save Atri.