Split
From Kokorodatabase
October 7, 2006. The day that Kokoro was split from Kokoro Draft. Cause of much drama. Shirogane Jishou may have said the defining sentence that broke it off, but Shirogane Ryou and Kiki Reikaira both blame their own "selfish" actions that caused it.
As of February 2, 2007, because Gamu avoided dying for her status as a temporal accident, Ryou is fading from existence. Shou, according to Shinga Shikari, is also angry at the truth cookie incident because he wanted to tell Shirogane Ichigo what he thought of her before saying it behind her back. Drama all round.
It was later revealed that Ryou's near disappearance was due to an illusion spell put into place by an unknown source.