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)