1boy, 3girls, ball, beachball, brown_eyes, brown_hair, character_name, cinderella_girls_gekijou, comic, high_ponytail, hori_yuko, idolmaster, idolmaster_cinderella_girls, idolmaster_cinderella_girls_starlight_stage, long_hair, multiple_girls, ocean, ogata_chieri, open_mouth, ponytail, producer_(idolmaster), sidelocks, smile, twintails, very_long_hair, yorita_yoshino