Alex_Clive
Thanks for the chapter. Try having Moryo take over the mc body. If the mc could survive this interaction, his soul, chakra, and the Tenseigan will mutate and become stronger. He might even get a massive somewhat dark chakra boost. You could also go dark with this story and have the mc seal it somewhere and later try to fuse it with Zero Tail to create a new and improved Demonic Serpent Tailed Beast and put a seal on it.