The Brave Fighters from the North - S2-E2
Revealing mistake: The opening reprises the last part of the previous episode, but Oda (Furano's 11) 's reaction to Hyuga that tackles him from behind (which would be a red card, incidentally) is different. For some reason the shot when he turns around is mirrored, so he turns to his right, but he is running facing left in the next shot. (00:01:45)