Continuity mistake: The inside of the truck Tsubasa and his mom ride in has stuff that change color/arrangement between shots. For instance, there's a beige box on top of the yellow and blue trunk next to Natsuko Ozora that is gone randomly in the aerial shots and when Yayoi is chasing them. (00:02:40)
Continuity mistake: Tsubasa moves up the ditch with a diagonal strafing. He then answers Sanae's questions but suddenly on that same ditch, by his feet, Roberto Hongo is resting, sleeping. If he were sleeping on the other side of the road (as it seems when he gets up later) then the feet of the characters in that first shot were facing the wrong way. (00:08:50)
Continuity mistake: When Tsubasa is staring at the soccer grounds sign, it is written with a different layout in different shots. (00:10:10)
Continuity mistake: When Genzo kicks the ball towards Tsubasa, the close-up shows the leg of someone wearing just thick white socks, while Genzo is wearing red pants that don't ride up that high. (00:21:40)
Continuity mistake: In his first dribble, Tsubasa goes past 3 opponents, but there's just one behind him in the next shot. (00:06:50)
Continuity mistake: Tsubasa is athletic and quick and goes straight towards the goal starting from the kick-off spot at midfield, but a couple of opponents he dribbled try to tackle him again, and are incoherently shown as tackling from the front even if they came from behind. (00:07:00)
Continuity mistake: Tsubasa dribbles 9 to 11 players in his first sprint, never stops advancing when tackled (he jumps over the offenders), dribbles 5 more, but in front of the penalty area there are at least 8 new guys ready for him. (00:07:05)
Continuity mistake: When Tsubasa hits his header, he is far from the box; Genzo punches away with 4 of his teammates in front of him, but then in the aerial shot there are 13 (!) teammates on the field, about 6 close by, plus... Tsubasa himself. (00:07:55)
Continuity mistake: When the two aces compete for Roberto's centering kick, Tsubasa is on the outside, in front of Genzo, going parallel to him yet as they land he's on the opposite side. (00:09:00)
Continuity mistake: An indignant Genzo pushes Tsubasa away from him as he tries to aid him. Tsubasa lands with his back into the goal net, but Genzo pushed him away from the goal. (00:09:30)
Continuity mistake: In the flashback, Tsubasa's father all of a sudden between cuts has his hand on top of the head before realizing that the kid is missing. (00:10:15)
Continuity mistake: Once Genzo is beaten, the ball is inside the goal towards the right. He walks away, nobody having touched anything, and the ball is towards the left. (00:11:00)
Continuity mistake: When Ryo tells Roberto that a drunkard like him is unfit to be the coach, next to him there's someone with an orange jersey, but there's nobody wearing that color in the wider shots. (00:21:10)
Continuity mistake: Throughout the episode, the ranks of the team Tsubasa battles against keep changing and going back and forth between 10 to about 13 people.
Kick-Off for the Future - S1-E3
Continuity mistake: When Tsubasa goes past the gates of the Nankatsu Elementary School, there are different people in each shot. (00:08:20)
Kick-Off for the Future - S1-E3
Continuity mistake: The girls in front and behind Manabu Okawa wear clothes different in colors literally in every shot. (00:10:30)
The Football Is My Best Friend - S1-E4
Continuity mistake: Roberto instructs the players to take their football everywhere. Ryo is the first to do so, but the soccer balls are in different positions from the beginning of the scene when he started the speech, even if Roberto hasn't moved. (00:02:20 - 00:03:20)
The Football Is My Best Friend - S1-E4
Continuity mistake: When Roberto and Natsuko Oozora are laughing after Tsubasa left, Roberto does not have the large dish in front of him, and he's leaning against the table with his left arm instead of the right. (00:05:40)
The Football Is My Best Friend - S1-E4
Continuity mistake: During his night training with high schoolers, Genzo is randomly shown wearing his gloves or not. (00:10:45)
The Football Is My Best Friend - S1-E4
Continuity mistake: When all the other players interrupt Tsubasa's training to beg to have extra training as well, Roberto's position on the field changes and so does the number of balls by him (then there's a last shot when he's next to the goal, but every player is in position so a cut in time can be assumed). (00:11:40)