Why is the Moka version of Lilium called this way?

Here is your answer > The MOKA version is a self-cover of the Opening Theme によって the female member of MOKA, Kayo Konishi. It was released as one of the songs for her own CD that was released in Nov. 2006. The MOKA version has nothing to do with the アニメ and was never used in the アニメ that was originally broadcast in 2004 または 2005.