Gemini Spark kills all of the FMs (save Cancer and Harp) in order to collect the Negative Energy that FMs are made out of. This Negative Energy is manifested in the Andromeda Key. Gemini Spark Black grew impatient collecting the Negative Energy and prematurely summoned Andromeda. However, thanks to Rockman and the AM Sages, Andromeda was defeated. Gemini Spark Black is literally stabbed in the back by Gemini Spark White who sacrifices his other self to collect the Negative Energy and restore Andromeda to its full power. Gemini Spark White is later destroyed by Cepheus, but Tsukasa is unharmed with no memory of the ordeal.