1. Mugendai Solution (無限大ソリューション) [Sanada Asami, Sawashiro Miyuki, Hikami Kyoko]
2. Run & Gun! [Toriumi Kousuke, Suzuki Chihiro, Saeki Tomo]
3. D.U.P! [Sanada Asami, Sawashiro Miyuki, Hikami Kyoko]
4. Only You -Kimi wo Mamoritai- [Toriumi Kousuke, Suzuki Chihiro, Saeki Tomo]
5. Voice of Heart (D.U.P. & P.K.O. version)
   [Sanada Asami, Sawashiro Miyuki, Hikami Kyoko, Toriumi Kousuke, Suzuki Chihiro, Saeki Tomo]

The lyrics sheet is color coded and shows which lines are sung by which person.

The CD itself is a color picture CD with the six characters Digiko, Puchiko, Usada, and P.K.O.