Since Tecmo Koei has already finished releasing their developer diary series for the game, they have chosen to release a new set of screenshots that show off a massive boss battle that players will need to go through at some point in the game.
The boss appears to be Mayan related and fairly gigantic as it seems that the boss has a number of powers to unleash. You can check out the screenshots below and be sure to keep an eye out for Yaiba: Ninja Gaiden Z when it is released next week on March 18th in North America and March 21st in Europe.