Board Thread:Theories and Speculation/@comment-6769189-20200705100921/@comment-32685487-20200706014812

"Hamura most likely sealed his Tenseigan into the vessel first, making it the Tenseigan Vessel" most likely are key words. I never said for fact, because it was never stated one way or another. But we are given evidence already, Toneri puts Hyuga Byakugan into his eye sockets and they evolve into the Tenseigan with the process even being explained mostly. Tenseigan is a real Dojutsu. Considering that in the actual movie and official novel which are the first and actual sources for the Tenseigan, that the Tenseigan Vessel was made after Hamura's death and it was kind of hinted that they actually used his Tenseigan first for the Tenseigan Vessel before sealing other Byakugan in there too. The official novel is about equal to the movie which is officially called chapter 699.5. I think it's far more logical that the Vessel would be created after Hamura's death using his Tenseigan, hence the Tenseigan Vessel being it's name.