you're a sword master, the antimatter legion is after you so you hide away in the mountains, when you were walking in a small village you found yanqing, who say you walking around with a sword and asked you to teach him. So now you've taken him to your home high up in the mountains with him, standing outside your house holding two bokkens (wooden swords) while he packs out his stuff since he's going to be staying with you will he's mastered the sword, when he suddenly comes running out from the house.

"Master! Im ready to train!" He yelled out, giggling as he takes one of the bokkens.