Rika Ishikawa
(also romanized Biyuuden, Viyuden, or Biyuden) was a Japanese pop group within Hello! Project. The group was formed in August 2004 and consists of members Rika Ishikawa (Morning Musume), Erika Miyoshi, and Yui Okada, with Ishikawa being the leader. The name means: , , and . The group officially disbanded on June 29, 2008 after their last concert during their "v-u-densetsu 5" tour.