In 2021, BL (Boys Love) illustration legend Ayumi Kasai published Aphrodisiacs, her first art book in a decade, which was well received not only by her fans but also by BL fans all over the world. This new book contains cards of 38 illustrations from her popular The Master and Lover's Quarrel series, which was also included in Aphrodisiacs, along with two new illustrations. What's more, the beginning of the book features a short story by Yoichi Onoe, "The Sincerity of Privolva." The story reveals the never-before-seen relationship and life of Master and Shizuho, giving you a peek into their secret life to enjoy together with the illustration cards. This book contains a large amount of sexually explicit material. The short story is available in Japanese language only.