Yaiba: Ninja Gaiden Z has a new developer diary available, and it’s below. Part four is the last in the series and discusses the Style of Slaughter. The final episode contains commentary from many members of the development team spanning Team Ninja, Comcept and Spark Unlimited. Yaiba: Ninja Gaiden Z will be released for PlayStation 3 and Xbox 360 March 18 in North America and on PC through Steam March 21. Thanks, AGB.