So Ryoga just comes in, takes his spot, and then they leave to Japan? Poor guy's stuck in another country because he lost a game of tennis.
I honestly believe they left WITHOUT a No.4 and WITHOUT a No.2.
Kaji was just a guy from the 1st Court, and that Irie or Tokugawa were both offered Top 10 positions and rejected them just before the Top 20 left.
And that No.4 originally belonged to Tokugawa or Irie but neither of them were interested.
Oni and Irie decided to stay behind and strengthen the Camp, likely after hearing that MSers would join the camp.
Tanegashima noticed 2 of his friends wouldnt go and thought ''now's my chance to not go on the plane'' and stayed behind too.
Since the 2 of them were not surprised at the MSers arrival.
Kaji was offered to go from 1st Court to No.5 as they felt 3 Top 10 places missing would be too much.
It isnt too out there.