Image 1: Who are You?

Volumn 1(Chapter1-??): After Aichi made so much friends, he been playing Vanguard a lot. His sister even enjoy watching him. But one day, a young teenage boy challenge him to a cardfight. Everything seem to be okay, until something strange happen. During that fight, Aichi left arm was broken, and he once again lost Blaster Blade. What will he do now? What are the voices in his head? Who is that person, and why did he took Blaster Blade?