As they got out of the Amaterasu Shell, the defenders found a high tech place that can act as an access to Amaterasu, but they must keep their eyes open for traps. Some sore of trap door was found by the heroes. As the trap door opens, everyone except Carl kept their eyes open. It seems like Carl fell down that trap door. As soon as he fell, he encountered Relius Clover and both Carl and Relius are in a heart of stone of the music battle. They both used music abilities and this battle comes to a draw until Carl won the battle.