Onimusha: Way of the Sword marks the beginning of newcomer protagonist Miyamoto Musashi’s journey through Kyoto, and now we know when that journey will begin: September 25. Plus, a demo for Onimusha: Way of the Sword is available right now. This release date was revealed in a new (and bloody) gameplay trailer that aired during today’s PlayStation State of Play, highlighting a boss fight, some sword clashes, and more we’ll experience in feudal Kyoto. In this latest trailer, we get a…