User blog comment:Naty Ranmaru Sawada/Inazuma Eleven GO Galaxy Supernova/Big Bang Recruitments/@comment-25001222-20140712121030/@comment-4435241-20140712123741

Yes it is. You must activate Pegasus Arc, Maestro and Lancelot. When you click on the aura button again, there will be an option by selecting Pegasus Arc, when all three Keshin are activated, to fuse.