1-6. A sister discovers forbidden feelings for her younger brother, leading to a complex and taboo relationship. 7-9. The tale of a married hero and a demon lord seeking revenge against each other. 10. Prequel to the married hero's story, focusing on a fateful night. 11. A summer vacation filled with sensual experiences. 12. A dark and twisted pen with mysterious powers. 13. The secret formula behind a rotten pen's abilities.