Ep. 4: Idol's Birth?

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Esuka Hibino wanted to talk with Mikuru Shindou. Esuka proposes the idea of having Mikuru make her debut as an idol. Meanwhile, Mark Whiting and Tatsuya Tachibana go back to the main Esuka branch to try and get Mikuru back. (Source: Cardfight!! Vanguard Wikia)