They were co-written by Kaoru Shizuka. Most of them are original stories which were later adapted in the anime. Others are adaptations of manga and anime stories. Only Volume 1 has been translated into English so far. The first novel, Rurouni Kenshin: Voyage to the Moon World, was published in Japan on October 10, 1996 and in North America on October 17, 2006.The second, Yahiko's Battle, was released on October 3, 1997. It retells various stories featured in the manga and anime series.The last novel is TV Anime Shimabara Arc which was published on February 4, 1999.