This is not a fairytale. No, this is a story of what lurks beyond the "happily ever after." Once upon a time, Elena assumed the role of Princess Veronica, married the crown prince, and lived happily... until...

After school, Sensei tutors me in secret. My classmates think we have some sort of relationship, but they’ve got it all wrong. Sensei is a serial killer, and I am his apprentice.“Sensei, please teach me how to...