Kick-Off for the Future - S1-E3
Other mistake: Urabe mentions that Nankatsu lost to Shutetsu 30 to 0 (which seems rather uncanny for a 40 minutes match), but the score mentioned in the first episode was 10 to 0. The more extravagant result ends up being the canon one.
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
Other mistake: When Roberto tells everyone that they should try to treat the ball like their friend (except when they kick it, arguably) one of the kids who react with puzzlement at this unusual statement is Tsubasa, but he is the one character who already does that ordinarily as established in previous episodes. (00:02:40)
The Football Is My Best Friend - S1-E4
Other mistake: Tsubasa is quicker and much more skilled than his friends with the ball and took off much earlier too, but they reach the crosswalk at the same time. (00:04:10)
The Football Is My Best Friend - S1-E4
Audio problem: When Tsubasa says bye to his friends from the top of the overpass, his mouth is not animated for the greater part of the line. (00:04:30)
The Football Is My Best Friend - S1-E4
Other mistake: In the opening shot of the dinner scene, Tsubasa's soccer ball is on the chair next to him and as logic dictates it is below table level. Later though it is much higher. Conversely, Roberto's head in other shots is so low that looks like he's sitting on the floor. (00:04:45)
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
Character mistake: Everyone is making a sincere effort to avoid touching the ball with their hands for the whole episode, even to the point of getting in late at school, but when the kids are waiting in line behind Ryo peeping into the classroom, a few of them have their hands on the ball. (00:06:45)
The Football Is My Best Friend - S1-E4
Other mistake: In the opening longshot of the Shuutetsu sparring match with Mizukoshi, the side on the right has 10 players instead of 11. (00:07:15)
The Football Is My Best Friend - S1-E4
Other mistake: Look at the bleachers when Ryo tells to the team that they need to examine Shuutetsu's playing; there are 11 players wearing the jersey, plus Tsubasa who is off to watch it running by the railing. Too many for the size of their team. (00:07:25)
The Football Is My Best Friend - S1-E4
Other mistake: Shuutetsu's sweeper Shingo Takasugi is the victim of an obvious coloring error during his introduction, and as he kicks the ball from the defense he is shown wearing the purple and blue uniform of the goalkeeper instead of the teal and red of the team jersey. Some international dubs even try to cover the mistake making up a line about him being a substitute keeper in absence of Genzo (but his jersey changes intermittently). (00:08:55)
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)
The Football Is My Best Friend - S1-E4
Continuity mistake: Taro Misaki says bye to his friends since he has to follow his dad elsewhere. Between the penultimate shot of him leaving and the previous and the last, the kids have changed entirely their clothes. (00:13:05)
The Football Is My Best Friend - S1-E4
Continuity mistake: While Taro is getting to Shizuoka, we see the Nankatsu public schoolers meeting again. Ryo greets Tsubasa and next to him there's a team member with shorts. When everyone follows Tsubasa, next to Ryo the guy is wearing long pants. (00:14:05)
The Football Is My Best Friend - S1-E4
Continuity mistake: Sanae beats with a stick the naysayer; the stick has a flag wrapped around it the first time, then the flag is gone. (00:15:00)
The Football Is My Best Friend - S1-E4
Continuity mistake: In the shot from behind when Sanae watches Tsubasa and the others leave the last training, the redheaded cheerleader is the one directly behind her and not the rightmost one. (00:20:25)
The Football Is My Best Friend - S1-E4
Continuity mistake: When Taro and his dad see at the horizon Tsubasa and Roberto going home from their training, there's no football next to Taro's legs. His sneakers are also different, with no pattern. (00:22:00)
Continuity mistake: The Shuutetsu players are in front of the gates of the Wakabayashi to get to the match with him. In the wide shot the leftmost ones are in a sunlit area (the rays come through the bars of the gate), but in the closer view they are in the shade. (00:02:05)