Kouseki – Manami Numakura, Yumi Hara & Azumi Azakura
光跡 – 沼倉愛美、原由実、浅倉杏美
This song is on the album: THE IDOLM@STER STATION!!! Long Travel ～BEST OF THE IDOLM@STER STATION!!!～
This song does not belong to me and all rights are reserved to THE IDOLM@STER
(sorry for the random pics was in a bit of hurry here xD)