Asana Amamizu’s life was forever altered when a mysterious red mark, resembling a fish scale, appeared on her wrist. Since that day, her own family has treated her like a monster, leaving her isolated and desperate for a normal existence. Now sixteen, she attends the Yotsuru Girls’ Academy, keeping her head down and her distance from the excitement of her peers.

That excitement centers on the arrival of a handsome new Language Arts teacher named Sakuya Shigure. While the entire school buzzes with chatter about him, Asana remains withdrawn, believing a person like her could never have anything to do with someone like him. However, her solitude is shattered when Sakuya unexpectedly proposes marriage to her, an event that plunges her into a romantic and fantastical situation she never imagined possible.

The story unfolds as Asana discovers that she and Sakuya share more in common than she could have ever dreamed. Set against the backdrop of what is described as an imperial city, this romantic fantasy follows Asana as she navigates the sudden shift from being a feared outcast to the object of a teacher’s mysterious affection. The narrative explores her struggle to reconcile her traumatic past with this new, unexpected chance at happiness, all while the truth behind the mark on her wrist and Sakuya’s true nature comes to light.