Based on the artworks of Nakaba Kowzu's original SyFy story, "Opera the GRAVITY". The fictitious movie-like designs of artworks are composed of 5 stories and have been released since 2007 in the form of pictures, landscape paintings, portrait paintings by CG, and the jewelry which the characters wear. KALPA, Solar artificial star. The core of the chronosystem, yet the system is led to its collapse with an unexpected cooldown.