Board Thread:Boruto Discussions/@comment-3261234-20161118110518/@comment-734582-20161122181349

TheKidXD wrote: Why isn't the Rasenshirken invisible Because it's a mass of chakra orders of magnitude greater than the tiny rasengan Boruto created, and we already know Chakra's invisible unless present in massive amounts.

Secondly, it seems that the Vanishing Rasengan works because it's technically a failing rasengan, and the Wind Release just keeps it stable enough to impart it's energy on the air in stead of harmlessly dissappating. After all, both Rinnegan and Byakugan can see chakra, so why would Momoshiki lower his hand when it vanishes?