Answer

His heart beat rapidly before he forced himself to calm down.

William knew that his answer would decide how his future would be. He had always thought about becoming a noble because he didn't want to become an ordinary commoner and lost this life.

Even though it would be difficult, but he wanted to try. 

He refused to have the poor fate for his entire life. 

And just when he thought that he could only walk on this path for a long time, Aurora came to him and asked the question to him. 

"A personal knight is a person who will protect the lord they serve," William replied as calmly as possible. 

Aurora looked at William and then asked, "Does it good enough for you or you have to become a noble yourself?"

William didn't immediately answer. 

He was thinking about it from another perspective.