Yu-Gi-Oh: Blue Sky Concerto

Utasaki Utana is an outgoing and friendly and kind 15-year old student at Toyogasaki Academy which is in her hometown's campus, and lived with her American elder sister called "Erita" who is an terrible cook and good at karate in the university, and that day she becomes an idol and meet duel spirit who are from another worlds as they're Chibis, Join her as she strive to be an idol!