Yu-Gi-Oh! Zexal Vol. 4

The third main spin-off to the Yu-Gi-Oh! franchise, Kazuki Takahashi's and Naohito Miyoshi's Zexal focuses on the adventures of amateur duellist Yuma Tsukumo who has his eyes firmly set on becoming the Duel Monsters champion. A mysterious spirit by the name of Astral turns up during his match with Shark and helps him to win.
Astral is searching for his memories which have been turned into 100 Xyz Monster cards known as Numbers which have been scattered across the globe. Yuma and Astral set out together to find Astral’s memories, eventually gaining the ability to combine their forces through the power of Zexal!
In Vol. 4, Luna challenges Shark to a duel while Yuma and his friends join up as the Numbers Club aiming to find all the cards and defeat Dr. Faker!
Notice: This manga is written in Japanese.