The latest installment in the Collection series featuring healing-type big-tits idol Yuzuka Kinoshita! The fourth volume, titled "Mastering the Art of Cowgirl: This Is How You Train!", focuses entirely on the cowgirl position. Known as one of the industry's best listeners, Yuzuka opens a no-holds-barred, unscripted life counseling session with troubled men—titled "Yuzuka's Advice Corner: Answering Your Problems with Heart and Body"—offering solutions through both emotional and physical intimacy. Also included is a documentary titled "The Real Fiction: The Case of Yuzuka (Pseudonym, 22)" that uncovers the wild sexual history of a mysterious woman named Yuzuka, found by chance on a DVD in a backstage room. Three intensely erotic and deeply personal works, showcasing Yuzuka Kinoshita's full depth and sensuality, packed with carefully selected scenes.