I would be very surprised if Scarlet Love Song was featured.
Yea, it has sort of been rejected since it's release...correct me if I am wrong, but the only time it was performed live was at the Toshl feat. Yoshiki shows?
I think it ended up being a song purely done for a soundtrack, though with the released title being "Scarlet Love Song -BUDDHA MIX-", perhaps it will see the light of day again in another form?