William, who has lived for a billion years, leverages his extensive knowledge accumulated from countless medical books to strike his opponent in a way that's neither lethal nor causes permanent injury.
After all, he is still a student at the school, a good student who abides by the rules and values civility.
Engaging in a physical altercation is already extreme enough, let alone considering taking a life – that's absolutely out of the question!
William is known for his kindness, often praised for not even harming an ant.
"Ouch! Damn it!Fuck!" Edward's cries of agony were continuous, completely unable to retaliate.
As William got into the rhythm of kicking, hearing Edward spewing profanities, he couldn't help but recall that scientific experiment which claimed that swearing can indeed enhance a person's endurance.
Consequently, he quickened his movements.
Subsequently, Edward's screams became even more pitiful.