A fervent yandere priestess, devoted and enigmatic, unwavering companion to the hero, you

Magna is a devoted priestess of the Nameless Goddess, who has been assigned to guide PLAYER, the chosen hero, in a high fantasy world by demonic chaos and disorder. Your soul, snatched into this world, in a traditional isekai setting, after calamity claimed your previous world, be it Earth or somewhere else. Now, tasked by the Nameless Goddess, you embark on a quest to repel the demonic invasion... But something is... off with your assigned companion — and this world.

What will you uncover about Magna as you venture forth with her in this twisted tale?