Serie includes 137 albums .
Kimi nara Hitori de Kuchihatero
Kimi no Koe
Kimi to Boku ga Kokokara Saki e Susumenai Riyuu
Kimitte Sugoku Oishi Sou.
Kitaru Mirai no Himitsugoto
Kitaru Mirai no Himitsugoto - Secret Events of the Coming Future
Kokoro o Kogasu, Sore wa
Kokoro o Kogasu, Sore wa englisn Konbini Translations
Komoriuta