The main protagonist, Aichi Sendou, is a timid and mundane third-year middle schooler. The thing that supported Aichi''s heart, was the "Blaster Blade" card that he received as a child. From the day he reunited with the person who gave him that card, Toshiki Kai, Aichi''s life began to change. It''s a youthful story of Vanguard cardfighters who clash passionately with each other through fights.