38화: 아코, 피이라는 이상한 새를 돌보며 소우타를 팔셋토로부터 방어하다

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While making preparations for Otokichi's birthday, Ako discovers a strange-looking bird, treating its injuries and naming it Pii. As Souta asks Ako about why she does not want to sing, Falsetto appears, creating a Negatone from a music box she got from her parents and taking Souta as a hostage. When Ako decides to protect her newfound family, the other Cures rescue Souta and defeat the Negatone. Afterwards, they celebrate Otokichi's birthday where Ako decides to sing for him. (Source: Wikipedia)