Ep. 18: An Odd Pair! The Melody of the Heart!

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Ruru undoes the memory manipulation on Hana's family, but finds she is accepted all the same. The next day, Emiru confronts the girls about their secret identities, asking to observe their daily lives to see what makes them so special. As Ruru starts to worry that she lacks a heart like others, she experiences a sudden system error, leading the others to tell Emiru that she is an android. As Emiru worries about how to help Ruru, Papple attacks with a Oshimaida with the ability to change forms. As Emiru helps Ruru stand up to Papple, the Cures manage to defeat the Oshimaida, after which Emiru and Ruru bond over music. (Source: Wikipedia)