Board Thread:Naruto Discussions/@comment-34661853-20181121232153/@comment-32685487-20181121235909

Tenseigan is canon. Hamura developed it later in life after she was sealed. How it manifested in him only and not her is unexplained. Toneri only had to transplant a Hyuga clan members Byakugan eyes which have to be very pure, in order to get it himself. Tenseigan is one of my fav dojutsu's honestly, and the fact it comes with its own chakra cloak mode is cool too.