Could Ninjas Walk on Water?

Mizu gumo (Japanese: 水蜘蛛, lit. 'water spider') was a water crossing device used by ninja. ... This was deemed to be 'busted' for walking on water, though possibly effective for rice paddies or marshy areas.

How can might guy walk on water?

Standing on water requires Power Manipulation, that is, creating enough chakra to cover his feet palms to keep him afloat. It doesn't require shape nor nature manipulation, thus explains how Rock Lee can stand on water.

Can ninjas fly?

Superhuman or supernatural powers were often associated with the ninja. Some legends include flight, invisibility, shapeshifting, the ability to "split" into multiple bodies (bunshin), the summoning of animals (kuchiyose), and control over the five classical elements.