This CD contains the fourth CD single by the seiyuu group Aice5.

The tracks are as follows.

1. Brand New Day
2. Eternity
3. Short Short Cake
4. Brand New Day (Off Vocal Version)
5. Eternity (Off Vocal Version)
6. Short Short Cake (Off Vocal Version)

"Brand New Day" is the opening song to the 2007 reruns of the TV anime Rikujou Boueitai Mao-chan.

The Aice5 members are Horie Yui (堀江由衣) , Takahashi Chiaki (たかはし智秋) , Asano Masumi (浅野真澄) , Kimura Madoka, Kanda Akemi (神田朱未) .