C775 Do Not Take the Usual Route

Most people might not know how hard the skull was, but as medical students, they knew that the toughest bone in the body was the skull! But how hard could a human's bones be?

For example, how do you feel when you use it to chop a pig bone? How many people could break a pig's leg with a single slash?

A human skull was much harder than a pig leg!

The silver needle was only able to use force with