The Demon Queen Faked Her Death, and the Heroine Came After Her!

Yindis accidentally transmigrated into a book and became the teacher of the novel's hero, Sevrie. The System promised that if he followed the plot to train Sevrie, then turned evil at the crucial moment into a Demon King who would destroy the world and be slain by the hero, he could return to his original world!

With no choice if he wanted to go home, Yindis did as instructed. While completing his mission, he also wooed every female character in the book except the protagonist, Sevrie. But an accident happened just as he completed the mission and returned! He lost all his powers, turned into a girl, and was left behind in the novel's world. After coming to terms with reality, Yindis went into hiding as a girl and adopted a younger sister, ready to enjoy a peaceful retirement with her.

Just when she thought she could keep slacking off forever, the hero Sevrie, now a yandere, found her! The ex-girlfriends she'd dumped also came after her one by one!

Hero Sevrie: “Teacher~ You're mine~”

Demon Queen: “You can't get away, little pet~”

Blood Elf Maid: “Master is so cute~ This time, it's my turn to be the master~”

Faced with the entanglements of her yandere disciple and ex-girlfriends, Yindis swore she would never give in!

But what Yindis didn't know was that, in a corner beyond her sight, her younger sister's gaze had also grown strangely unsettling...