1화: 고등학교 준비를 하던 중 아인과 미오가 새로운 스페이스 아이돌 위기에 직면하다

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One year after becoming Diamond Friends, Aine and Mio prepare to enter the Star Harmony Academy High School. But along with the responsibility of teaching the next generation of idols about Aikatsu, Aine and Mio begin a new journey in Aikatsu when they receive a distress call from a strange new idol named Hibiki Tenshou from space. (Source: Wikipedia)