Cardfight!! Vanguard

Aichi Sendo is a shy middle school student who avoids drawing attention to himself. He carries with him a card called "Blaster Blade," a gift from his childhood, which inspires him to participate in a card game known as Vanguard. This game is set on a planet named Cray and features a unique play system that leads to its global popularity. Through engaging in these card battles, Aichi's life begins to change significantly.