The IDOLM@STER Cinderella Girls: U149

Arisu Tachibana, a young girl in the sixth grade, receives an invitation from her company president to participate in the Third Entertainment Section, a new idol project. She joins eight other young girls, who meet their new producer, a childlike adult, for the first time. Initially, the girls are surprised by the producer's youth and inexperience, leading to an awkward situation that leaves Arisu disappointed. The producer's genuine passion for idols and his determination to help the girls eventually wins them over, marking the beginning of their journey to become idols.