Mixed Doujinyu-Gi-Oh!×fatefate /Advent of the Pharaoh

Tanaka Courage was originally just an ordinary junior high school student. One day, he discovered a strange symbol appeared on the back of his left hand, and what followed was a series of incredible events. Holy Grail War, a wishing machine that can grant wishes. Will his deepest desire, the Holy Grail, come true? Motto: Even if we are in different worlds, this friendship will not change