Clockwork Daydream is a drama CD made by Inti Creates for Azure Striker Gunvolt 2. It is one of two, the other being Paradise's Frantic Song.
It focuses on a side-story with Copen, Mytyl, Lola and Nori that took place in between Copen's missions. The CD also includes karaoke versions of Lola's songs.
It is currently not available outside of Japan. However, a rough fan translation exists.
Clockwork Daydream Gallery