Stab!
As Durendal and Caliburn were embedded in the head of the Golem, Basil unleashed the Nature Mana in them. It violently burst forth, blasting the head of the Golem and disintegrating some of the ruins forming the Golem's head.
Basil jumped off the Golem's head after he had discharged all of the Nature Mana in Durendal and Caliburn—he watched as the Golem lost its head, its neck, and some part of its chest.
The crystal protecting Charles was still unharmed; however, it was already weakened greatly as the Mana supplying it went to the destroyed part of the Golem. Ione's Spell hit it afterwards, thus rapidly breaking it.
The crystal protecting Charles proved to be strong enough for him to not be worried about any attack from Ione in normal circumstances. Even after being weakened, Ione's Spell still spent three seconds to break it.
Shatter!
Flash!