Full Moon wo Sagashite

The Rival Appears! (1x16)

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Mitsuki gets an audition for a shampoo commercial. It's Meroko's turn to go out with Mitsuki while Takuto stays home. Unfortunately, Meroko gets her lost when finding the site for the audition. What's worse is that the girl from the singing audition back in the first episode has returned! Her name is Madoka Wakamatsu, and she's willing to do anything to keep Mitsuki from winning the audition.