Ladies Saviors, I am Truly Not an Evil God

Transported into a horror game, Andy nearly killed his sister—the female protagonist—at the very beginning. Given its Cthulhu-esque style, the game's ultimate ending was inevitably one of despair. To survive more effectively, Andy resolved to unlock the hidden Happy Ending route! However, as time passed, he found himself no longer satisfied with even that so-called perfect conclusion. In this world, Nothingness coexisted with Existence; the Human Rationality warped the Mandate of Fate, and Truth blurred seamlessly into Falsehood. He made his decision—to become the greatest terror in this entire world! "But my dear younger sister... how is it that you ascended to an Evil God before I did?"