Tenseigan Chakra Syringe

The tenseigan chakra syringe is a syringe filled with the chakra from a ōtsutsuki clan member and can be injected into a Hyuga clan member who has byakugans and the tenseigan process will be put on maximum speed and will be over with in a matter of minutes but the pain the user will feel is immense, this was used by Akatsuki Hyuga as a last resort against obito when she and konan fought him. she got acess to Hamura ōtsutsuki's chakra like naruto and sasuke got acess to Hagromo's chakra, which allowed her to keep up the tenseigan for the rest of her days, she can devolve the tenseigan back to a byakugan at any minute.