Doragon! Muteki no ken to tate - S1-E4
Other mistake: The Lushan waterfall is show as enormous and hundreds of meters tall, but when the camera is behind the waterfall and Shiryu punches it repeatedly to train, we see his arms going through it as if had a depth of a few centimetres. (00:06:50)
Doragon! Muteki no ken to tate - S1-E4
Other mistake: Seiya parries a punch from Shiryu, but his fist breaks the armor's vambrace. During the initial hit, Shiryu's knuckles are colored flesh, but of course he is wearing the gauntlet of his armor. Similarly, when the armor breaks, it shows skin in the gaps, but the rest of the arm behind the shattering piece of forearm guard is colored red like Seiya's bodysuit. (00:11:55)
Doragon! Muteki no ken to tate - S1-E4
Other mistake: In the dramatic rendition of Seiya tricking Shiryu into punching his own shield, he did not flip the shield around the arm, but it's the whole arm to be turned in an impossible, elbow-breaking direction. (00:16:00)
Doragon! Muteki no ken to tate - S1-E4
Other mistake: In the close-up of Seiya's hand as he hears Miho's voice, the forearm guard lacks the red border. (00:18:40)
Doragon! Muteki no ken to tate - S1-E4
Other mistake: Tatsumi suggests to stop the fight because if the contestants get seriously hurt, it would reflect poorly on the Graude Foundation, but the speaker of the tournament announced just in the earlier episode that fights can end in a contestant's death. Bit late to worry about PR issues, when it's already marketed as a fight to the death. (00:19:15)