After an unbelievable loss from Sagi koichi team, the main character.
According to them, he was the most useless player in the school soccer team but Sagi never gave up because He had this Ego in him that always never stop putting him to his limits.
One day, Sagi's coach told him that he was the most useful at the team not to say something else but the coach invited him to a year event that can bring the ego in him and sagi replied that when he becomes a good player he wouldn't return back to the school.
At Sagi's house, He told his parent and they told him to follow his dream and it was also know problem to crush ametures dream and fix weaklings dreams. Sagi was happy because he had to make new friends and know his place in soccer,he also wanted to play with new people.
A week later, sagi took his bag and told his parent's the byebye word. He went to the train station to get a train to the centre . In the train, he meets guy called Aki. The younger brother of Spain captain, Gaki. The both of them were actually going to the same place but sagi made no eye contact with him because it might spell trouble for him.
They got to the centre and saw plenty people gathered there for the test.They were told to enter the big hall.
Then the egoist appeared and told them "I can see the ego in some of you but most especially the lame ones but I can't believe they are people ready to become a good players and stand out as Egoers to the top but ametures are spoilling the aura of this egoists" but people were annoyed and left. Sagi asked " what are we doing here and where can we find our ego"
With a stern smile, he said "Your ego can only be found at the BLACK BOX ego development test"