Yu-Gi-Oh! Zexal

Yuma Tsukumo is perhaps the worst Duel Monsters player of all time, but that never stopped him from challenging anyone and anything that could shuffle a deck. When a strange dream leads him to unlock an inter-dimensional gateway, Yuma finds himself connected to a mysterious being named Astral who suffers from amnesia. He wasn't the only thing to come through the gate though, for the powerful Numbers cards have been unleashed into the world, each containing a fragment of Astral's memory. With Astral as his guide, Yuma must defeat those who posses the Numbers and reclaim them in battles where defeat means death for his new partner.