Capítulo 152: The Movie's ending

The movie continued onward, a little boy approached the powerful Ancient Martial Artist his eyes red from all the crying, but the little boy stood in front of the Ancient Martial Artist with determination. The little boy then bowed his head and spoke in a loud voice, he was not shouting but his voice echoed through the village. 

"Old man please teach me martial arts!" 

This little boy was the protagonist of the movie, during the attack some of the Caladrius were able to reach the village and kill some people, among those that were killed were the parents of the protagonist. To protect him his parents made the ultimate sacrifice. 

The protagonist never wants to feel so powerless ever again and didn't want anyone to feel the same way as he did which is why he wanted to learn martial arts from the old man.