She Banished Me Yesterday, But Today She Calls Me Master?

Asto Berg was reincarnated into another world as the “final boss” older stepbrother — but instead of fulfilling his original role, he used his knowledge of the game to guide his step-sister, Eltrinde, who was destined to fall into darkness and become the cause of the world’s destruction, onto a righteous path. Together, they defeated the Demon King who sought to plunge the world into chaos, becoming heroes in the process.

However, after their victory, Eltrinde cast him aside as if he were no longer needed. Now, concealing his true identity, Asto lives quietly as a teacher at a remote frontier academy.

One day, a devoted and overly affectionate s*ave named Linde appears before him.

But in truth, this s*ave is none other than the very same step-sister who once exiled him—Eltrinde.