Survivors of Alterna: Final Run

Betrayed, stranded, and hunted by hungry fish-like creatures known as Salmonids. This is the predicament Akikta, the last living human, finds himself in. After making himself an enemy of the New Squidbeak Splatoon, he learned he's been playing for the wrong team, and now the fate of the new world rests on his shoulders. In order to succeed in protecting Earth from a genocidal traitor, he has to evade capture, make amends with the New Squidbeak Splatoon, and explore a large mechanical metropolis known as Atlantis; All while looking for a way to save Marie, an idol he foolishly handed over to the real enemy, and his friend, Inka, who he unintentionally got captured. And the worse part is he's running out of time to do all of it. If Akikta doesn't find a solution to his unfortunate condition, he'll be dead by tomorrow. But he's never been a quitter, and he isn't gonna start now. With nothing but his wits, his octoling friend, Nakji, and his will to live, Akikta will find a way to save everything... or die trying.