Board Thread:Episode Discussions/@comment-1181222-20180131111324/@comment-3568954-20180201164305

for 2 different people to have the same kekkei genkai doesn't require them to be the same bloodline.

when a person has an affinity for say earth release and an affinity for fire release, molding said chakra together will create a new element and said element is a Kekkei genkai