Arthur's intent was simply to break Crarox's bounded field and escape the relentless bombardment.
As such, he quickly deactivated his Bounded Field right after he achieved that goal.
Crarox, who just had his bounded field broken had to deal with the rebound damage from this and Arthur took advantage of this chance to leave the ocean…along with Crarox.
He charged towards the Leviathan and the creature responded with a tail swipe, unaware that this was precisely what Arthur wanted.
Arthur dodged the forked tail's swipe, before latching onto it with his whole body, almost like how Koalas latched onto trees.
'Strength Enhancement!'
He tightened his grip, his fingers piercing through Crarox's scales to anchor his grip. He even used Gravitemporal Harmony to enhance his stability and thwart Crarox's attempts to fling him off.
As his muscles bulged up, summoned the power of his gravity comprehensions and created a powerful gravitational upforce.