The letter reveals the existence of Shadow of Orion (or a variation of "True Inazuma Japan" depending on the translation), a team made up of players who were originally candidates for the national team but were "discarded" or replaced by the Earth Eleven members.
This episode serves as the buildup to the final confrontation on Earth, where the legitimacy of the Earth Eleven is challenged by those who feel they were unfairly left behind. Context within the Series Inazuma Eleven Go Galaxy Episode 33
In of Inazuma Eleven GO Galaxy , titled "Arrival! The New Inazuma Japan!" , a key plot point involving "paper" (or a letter) is the arrival of a challenge letter from the "True Inazuma Japan." Key Details of Episode 33 The letter reveals the existence of Shadow of
After Earth Eleven returns to Earth following their victory in the Grand Celesta Galaxy, they are greeted by a mysterious letter. This "paper" is an official challenge delivered to the team. The New Inazuma Japan