Are you ready guys!? Put ya guns on!
Blue path starts at 11:15.
Purple path starts at 16:25.

Okay so, 3 of Masamune's paths are pretty much the exact same. And I refused to play through 3 story modes of the same thing just to get his last cutscene again but with a different background. So only one of them is in this video.

Masamune is voiced by Reuben Langdon, Kojuro by Travis Willingham, and Yoshiaki by Christopher Corey Smith.