The Brothers Tachibana - S1-E22
Revealing mistake: In the very first move by Hanawa, Misaki and Tsubasa fold back before the twins' dynamic advance. Due to an animation error, Taro Misaki's hair in the wide shot flickers of a different color several times. (00:12:40)
The Return of the Seven (1) - S2-E1
Revealing mistake: When Dennis is picking up Vicky from the hairdressers in the Jag, you can see people standing around watching the filming.