Penpals
Albums CD 1997 Japan
Album
Albums CD 1998 Japan
Albums CD 1999 Japan
Album, Stereo
Albums CD 2000 Japan
Albums CD 2001 Japan
Albums CD 2002 Japan
Albums CD 2004 Japan
Albums CD 2012 Japan
Albums CD 2022 Japan
Albums CD 2023 Japan
Singles & EPs CD 1997 Japan
Single, Stereo
Singles & EPs CD 1998 Japan
EP
Singles & EPs CD 1999 Japan
Maxi-Single
Single
Singles & EPs CD 2000 Japan
Singles & EPs Vinyl 2000 Japan
12", 33 ⅓ RPM, Stereo
Singles & EPs CD 2001 Japan
Singles & EPs CD 2002 Japan
Single, Copy Protected
Singles & EPs CD 2003 Japan
Single, Limited Edition