Serebii.net has uploaded the first trailer for Pokémon + Nobunaga’s Ambition to its YouTube page. You can watch this below:

Early details indicate that the character with the Eevee is the game’s protagonist. The protagonist can actually be male or female, and both genders start out with an Eevee. The main warlord is obviously Nobunaga, who has a Zekrom for a partner. Meanwhile, Mewtwo is assigned to Kenshin.

Pokémon + Nobunaga’s Ambition is slated for a spring 2012 release on the Nintendo DS.