Kokoro was created in 1914.
Kokoro Connect was created in 2010.
Kokoro no Hoshi was created in 2009.
Kokoro Bīdama was created on 2006-03-01.
Kokoro no Ato was created on 2007-12-12.
Hadaka no Kokoro was created on 1998-07-01.
Kokoro Komete was created on 2009-12-02.
Kokoro - video game - was created in 1998.
Shima Uta was created in 1992.
Kaze no Uta was created in 2002.
Sora no Uta was created in 2005.
UTA Trax was created in 1999.