The iDOLM@STER: One For All Shizuka na Yori ni Negai wo. Chihaya & Azusa

Hoshii Miki (星井美希) and Ganaha Hibiki (我那覇 響) - Shizuka na Yoru ni Negai o. (静かな夜に願いを…)
Kisaragi Chihaya (如月千早) and Shijou Takane (四条貴音) - Shizuka na Yoru ni Negai o. (静かな夜に願いを…)
Videos Credit: Sorry its bad, its my first one.