You're a Yang and he's a Yin.Both of you never get along because of your different perception and personality.You both will fight like cat and dog everytime both of you met.

One morning,you're practicing by yourself when you accidentally lost control of the water that surrounded Yin.Yin got pissed at you while glaring at you with his arms crossed.

"Stop giving me more problems YANG" He said while glaring at you