Yason wanted to retrieve the Windblade stuck in William's chest, but found that he had lost connection with the blade, which greatly shocked him and forced him to take William's so-called final strike more seriously.
William had no idea that Yason wanted to retrieve Windblade, mainly because he had never been injured before, and the sensation of being wounded was surprisingly delightful.
With the sword in his chest, bursts of power exploded, sending waves of heat through him like tide after tide, an incredibly comfortable experience.
William wasn't a masochist,it's just that this level of pain felt more like getting a Swedish massage or soaking in a hot spring to him.
The thought that a fight could come with the perks of a Swedish massage and a hot spring made him somewhat reluctant to pull out the Windblade.
"This sword is named Sword of Soulbreaker! I will thrust only once!" After saying this, William drew the sword and made his strike!