A super intense adventure fantasy of "master-servant yuri" with swords and magic! Heroine Lena embarks on a journey with her childhood friend, Princess Sephiria, to break the curse of becoming an erotic book cast by the Demon King. Their first goal is to reach the water town, while trying to reunite with their former party member, the elf Pile, who was once a part of the female hero party. However, a new "sister of the Demon King" suddenly attacks them... Can the two overcome the crisis once again through "sacred acts"!?