Battle Spirits: 15-shuunen Kinen Short Anime

About: Battle Spirits: 15-shuunen Kinen Short Anime

Bashin and Aibou from "Shounen Toppa Bashin" (1st series) meet Rei and Mugen from "Saikyou Ginga Ultimate Zero" (6th series). They challenge each other to a card battle, using the new keiyaku (contract) cards.