Thread:EmperorSigma/@comment-25771248-20150627210931/@comment-25771248-20150627214433

Well, they would let him in only, and only, due to his lineage as the son of Densetsu. Being the son of the head of DIPLOMATIC affairs, Namazu would be used as a bridge to connect Konoha with the other lands due to how they knew Densetsu, his own prowess expected to be reflected into his own son. So basically, he got in through the rep and recommendation of his own father in addition to the reputation he had garnered by himself (Taijutsu no Kami).