This shouldn't be called a series but a conclusion of Yu Gi Oh. After recovering his memory and his lost name from the ultimate R.P.G against Yami Bakura, Atem (Yami Yugi) has to perform the final test against little Yugi in a duel called Battle Ceremony (Tatakai No Gi). Here is the duel of destiny that will judge the future of Yami Yugi. If Yami Yugi wins, he will stay in the current world normally with little Yugi and his friends. However he has to return to the world of death if he loses little Yugi in this game. Little Yugi is going to give his answer to Yami Yugi in this duel. Although he doesn't want to separate from Yami Yugi, he intends to perform his best shot as a duelist.

"Here is the complete ending of Yu Gi Oh following the original comic story"