Samurais are gaining popularity over Japan.  A documentary crew is interviewing some of them including Bokuden-chan, the strongest swordsman, but when the film comes out.  The Samurai Girls have a new problem to deal with.
But that's not your mistake.
Pero, en realidad te has equivocado 
con respecto a otra cosa.
Pero, en realidad te has equivocado 
con respecto a otra cosa.
Mas não foi isso que você fez de errado.