
Originally Posted by
Katoma
To answer at topic, I see things on two sides:
On the one hand, Atem with Yugi's help has retrieve his name. Thing did,
he wants leave Yugi to retrieve his family, his friends. He think he
has accomplished his destiny and has nothing to do on Earth... and with
Yugi.
On the other hand, Yugi who said at Battle City he wants fight by
himself when Atem tries to retake the control of Yugi's body to fight
Jono-Uchi.
If Atem wasn't left, Yugi would have always associated at Atem. Never he
would have can success to prove he has skills as duelist because Atem
had always fought.
See this way, the separation was a necessity for each other.