Everything about this character creation is totally up to whoever wants to make Masayoshi childhood rival. You are even welcome to change the name that is listed above (Mitsunari Anku Kawazu) to something else if you would prefer. The only thing I require of whoever is include just a few simple history things. Masayoshi and Mitsunari has been childhood rivals ever since they were in the academy though their rivalry changed into more of a friendly rivalry when they were put on the same genin team and passed the chunin exams together. The traits listed above (straightforward, reckless, perceptive) are just suggestions though they seem like what I had in mind for my characters childhood rival. That is currently about what I had to say about this request. If you have any question just PM my Masayoshi account.