The confirmed combat premise is direct: Musashi fights Genma with intense swordplay while using the Oni Gauntlet to access power beyond human limits. The gauntlet can absorb Genma souls and turn them into a power source for its wearer.
What you can rely on
The official PlayStation description confirms a sword-focused action game, a protagonist equipped with the Oni Gauntlet, soul absorption and formidable foes whose martial prowess can rival Musashi's. It does not publish button mappings, weapon categories, upgrade costs or encounter tactics.
A practical pre-launch approach
Treat trailer language as a combat premise, not a complete mechanic list. Once the game is playable, this page can add tested information about parries, dodges, soul usage, weapon reach and boss patterns. Until then, claims about the best build, difficulty or a Soulslike system remain unconfirmed.
See the Oni Gauntlet and Genma page for the two systems that define the official description.