Ep. 4: μ's advances while Nico hides her family duties from her friends

μ's and A-Rise pass the first preliminary round, prompting the group to focus on training. Nico acts distracted and flees when followed, leading the others to encounter her siblings: Kokoro, Kotaro, and Kokoa. The children believe Nico is the sole star of μ's, viewing the others as mere backup dancers. Cornered, Nico confesses she has been skipping practice to care for her siblings while their parents are absent, maintaining a facade of being a super idol to protect their admiration. Nozomi notes Nico sustained this lie after her first-year idol attempt failed. To resolve the situation, the group organizes a special performance for the siblings, framing it as Nico's final solo act before she fully joins μ's as an equal member.

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