Information:
The group began its career in 2001 under the name "Rudolf Steiner". Kaya came from ISOLA, and Hora from Velvet Eden. After signing to ex-Malice Mizer guitarist Mana's label Midi:Nette, they would change their name to Schwarz Stein (meaning "Black Stone" in German).

The group's last performance was on March 29, 2004. They broke up due to creative differences.

They would reunite for one performance on December 15, 2004 (Dis Inferno II ~Last Year Party~, hosted by Mini:Nette).

The two members went on to each pursue their own solo activities. They would come together for a single collaboration once again in April 2006 under the name "Another Cell".