"Isn't it obvious? There's no living thing that can surpass us in sex...!!" Katsuragi has been marked as a succubus sister since childhood. His eldest daughter Chloe blends in with humans and guards him to prevent strange insects from getting to him! One day, she returned to her succubus status, thinking, ``Maybe I should just have a taste,'' but since she had been in the human world for so long, she felt ashamed of her true, less exposed self... The first episode of the succubus naughty comedy trilogy♪