Azai Nagamasa

Wielder of the Blue Water-Dragon Morpher, his mind is able to cut through any problem like the cold rivers through the mountains.

While some warriors studied the art of combat, Nagamasa studied the art of war. If he didn't have his face buried in a book about the history of war, Nagamasa was at his father's side, learning the ways of the Shinkengers. His father was the Shinken Blue prior to Nagamasa, and when his father passed the title of Shinken Blue was passed down to Nagamasa. He and Masamune recieved their morphers within the same year, creating a bond between the two.

It is speculated that Nagamasa may have feelings for Oichi Shibata--Shinken Pink.

During the attack on Honnoji, Azai's lungs were pierced through, leaving him unable to breathe until Luna was able to fix them using her magic.