Jun Letian, a unique member of the Jun family, wasn't very fond of some of Huaxia's ancient martial arts. On the contrary, he always preferred to dabble in more obscure things.
For example, take the ninjutsu. Originally a Huaxia tradition, it gradually disappeared into the annals of history due to disdain, but the little devils who took it from Huaxia back then treated it as a treasured gem. Now, it has developed into a unique symbol for them.
Yet, this Jun Letian was extremely interested in ninjutsu. According to Jue Tian, Jun Letian once even traveled to Fusang, disguised himself as a Fusang native, infiltrated the Koga school, and worked his way up to master the entire ninjutsu.
After mastering the ninjutsu, Jun Letian returned to Huaxia. He didn't develop in Fusang or make any moves there; instead, he returned very low-key.
When the people of the Koga school found out that Jun Letian was from Huaxia, they were furious, and even the people of the Ise Grand Shrine were enraged.
