Vol.1: Sono Yubi Dake ga Shitteiru (The Lonely Ring Finger) Vol.2: Hidarite wa Kare no Yume wo Miru (The Left Hand Dreams of Him) Vol.3: Kusuri Yubi wa Chinmoku suru (The Ring Finger Falls Silent) Vol.4: Sorete Yubiwa wa Kokuhaku suru (The Ring Will Confess His Love) Vol.5: Sono Yubi Dake wa Nemuranai (Only That Ring Finger Will Sleep)