Saragon

He could be older than dumbledore

That sentence is a cause of war.

If I give you a kidney, don't ask me silly questions like: Where did you find this? Whos kidney is that? Why do you hold kidney with bare hands? Just say thanks

Ryo might be a genius but he is not same with itachi or kakashi. They graduate from academy 6-7 years old and become chuunin. Also Kakashi and itachi became member of anbu and went to killing assasination mission.

Yes, it's a chinese novel and you can find in mtl sites.