Koishite♥Akuyaku Princess!

Remu is a second year middle school student who loves reading. She is troubled by the fact that she cannot be honest with the boy she likes, Riku. One day, she suddenly finds herself transported to the world of her favorite novel, "Happy Princess Precure"!! In this world, Remu becomes a princess, but she is the evil Princess Rem who is imprisoned for the rest of her life at the end of the story! What's more, there is also a Prince Riku who looks just like Riku...!?

(Source: Ciao Plus, translated)

Note: Chapter count includes two extra chapters.