Arthur wasn't content about having a single technique like that. Even if the scorching sun sword technique was overbearing and lethal, it wasn't enough to deal with different situations in the fight.
Arthur knew the sole weakness about this technique, which was water and ice. Fire was considered the nemesis of these two energies, and if he was destined to face foes experienced in these two aspects, he would struggle.
Not to mention the biggest threat he would face up there was not the enemies, but the sturdy defenses of the prison itself.
He didn't know what the prison was like, but he had a thought about it and had few ideas regarding that prison.
In his eyes, the prison would be on par with the strongest castles and forts he ever faced so far, if not being the strongest out of all.
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