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Once, Rui has aimed at a singer. However, now, she was frustrated and was doing the hostess's work in the country. When Rui goes home together with a friend's Tsunko, She met Momoko, the rival at the time of her having aimed as a singer. Momoko became an idol singer and was successful. On the grounds that Momoko has ridiculed Rui, Rui killed two friends, her and her. In order that Rui may escape a crime, She formed the idol group together with Tsunko pretending to be Momoko and others.
