Kato Momoka takes on her first challenge as a director?! The theme is the butt! Of course, she stars in it herself! She studies ways to make her butt look erotic, attends gatherings of butt enthusiasts, and visits the sets of butt-fetish AV directors to learn. Despite being plagued by butt accidents, Kato Momoka aims to create the ultimate butt masterpiece. Please enjoy her healthy and erotic butt! After watching, you'll definitely want to squeeze it!!