1cc will give you possibly decrypted vhd file; I was able to extract it with mounting as read only. (Mounting as read/write gave me error)
 
	To apply Omnimix, it should not matter but I'd recommend tinkering with quoted SegaTools (AquaMai) first. After it's confirmed it's working, you're good to go anyways.
 
 
	Since the 1cc one might be THE leak, I don't think it's possible. Taking time is still worthy tho.