Momiji Momi (茂も見み 紅葉もみじ, Momi Momiji?), also known as The Mystery Masseuse (謎なぞのマッサージ少しょう女じょ, Nazo no massāji shōjo?), is a character in The 100 Girlfriends Who Really, Really, Really, Really, Really Love You. She is Rentarou's 15th girlfriend, Rana's childhood friend, a third-year student at Ohananomitsu High School, in class 3-2, and a skilled masseuse who leaves her "clients" (other students) in extreme bliss, Momiji enjoys the softness of female bodies, and developed her skills to become a professional masseuse for gravure idols. She falls in love with Rentarou after he turns his body musculature into the perfect tool for her to practice on. In the bonus story of Volume 9 of the manga, it is revealed that Momiji's love for soft things stemmed from a childhood visit to a bouncy castle, where she encountered Hahari Hanazono and felt her chest by accident.