Viola assumes the male name Cesario and infiltrates the boys' dormitory of an academy in a neighboring country to search for her twin brother, who went missing after being kidnapped six years ago.

Immediately prior to this, her memories of a past life returned, and she realized that this was the world of an otome game, and she was its heroine.

However, she has no intention of pursuing romance as in the game.

Her top priority is finding her beloved brother.

Despite this, she can't stop herself from being drawn to Orsino, one of the capture targets, who helped her when she was in trouble.

In a world without the villainess, Orsino is slightly different from his game counterpart. Unable to bear being seen as a younger brother by him, she runs away, and there, finally reunites with her long-lost brother.

A spin-off of "It Seems I Failed to Become the Villainess." This is the heroine's story, based on "Twelfth Night."