Desmond Blake had read about people reincarnating in other universes. So, meeting a ROB named TM11 and being reincarnated in the Nasuverse wasn't that surprising to him. What was surprising to him was being reincarnated into the Nasuverse as the Supreme King from Yugioh GX and the Caster of the Fourth Holy Grail War. He had never read about that one before.

Gilgamesh the King of Heroes he must be first in all things. When Rejecting Moon Cell and Taking Hakuno Kishinami to a planet 1500 light years away from earth he never imagined to find something called the king's card game. determined to make this game his own he has Hakuno attend Duel academy with a deck Gilgamesh has made to prove once and for all who is the one and only king.

Shirou Emiya, an unusual boy with an unusual family. Founded by the Emiya family, he grew up to be a seemingly normal boy with a hidden side that much resemble his father. He will go to Duel Academy to face what may possibly his greatest challenge yet. Or, is there something greater going beyond the boundary?