GUILTY in Resident Evil: Degeneration???

[waterballoon]

Hey guys, Resident Evil has released a new CG movie, RE: Degeneration, and it has been released in Japan on Oct 18, 2008, and will be released in America (and the rest of the world?) on Dec 30, 2008.

According to Wikipedia (as unreliable as it may be...), it stated that Ann Tsuchiya is singing the ending song for the movie, and the name of the song is GUILTY.

My question is: Does anyone in Japan who has watched the movie can confirm if GUILTY is really an Ann Tsuchiya song, or is it Ayu's GUILTY?

Links:

http://en.wikipedia.org/wiki/Resident_Evil_Degeneration

Under the Music section of the page is this:

Originally Posted by Wikipedia

The Japanese singer and lyricist Anna Tsuchiya has been reported on the official Degeneration blog to sing the ending theme for the film, named GUILTY

Any confirmation on this? And sorry if it's the wrong section...