Pet: Genesis

In the future, Earth is invaded by an alien race called the Leviathan.

Years after invasion day, Iris is struggling to survive among the bitter ruins she must now call home. But when her home is ambushed by the Leviathan threat, her will to fight and selfless attempt to sacrifice herself catches the attention of an otherworldly being—the ruler of the Leviathan race.

Enamored with her selflessness, Remus decides to keep Iris under his watchful eye and prove to her one thing—that at their core,...