Board Thread:Questions and Answers/@comment-675805-20130624124040/@comment-386913-20130625150503

"Denji" and "Denzi" are interchangeable; particularly considering the "naming sequence" for Megaranger, with the five kids spelling out "Denji" rather blatantly:

Date Endou Namaiki Jougasaki Imamura

If it was meant to be "Denzi", then they would have given Chisato a last name starting with "Z".