Maken no Hime wa Ero Ero desu

Princess Sheila Magus finds a cursed erotic sword while exploring the underground treasure chambers of her castle. She was accompanied by her confidant Eric Smedt, with whom she has been friends since childhood. Upon grasping the sword, Sheila destroys its seal, drawing an erotic curse upon herself. While the sword is certainly useful as a weapon, the curse drains the wearer of her life force and causes erotic daydreams in the process. Sheila’s parents commission the elf Nina Magbe to take care of breaking the curse, as she is already working as Sheila’s teacher. According to Nina, it is of utmost importance for the release of the enchantment that plagues the princess that every erotic daydream is overwritten in greater strength by corresponding erotic actions in reality …

Maken no Hime wa Ero Ero Desu, 魔剣の姫はエロエロです, The Princess with a Cursed Sword is Very Lewd, 마검의 공주는 에로에로입니다