Himitsu no Ouji-sama☆

ヒミツの王子様☆

Himitsu no Ouji-sama☆ follows Asahi, who is super poor and has a part-time job. However, one day, she is thrown into the secret world of idols, which is filled with lots of handsome young men. (Source: Anime News Network) Included one-shot: Volume 2: Sugar Crush