Secret Talent is a technique consisting of at least 2 elements, or Ninjutsu, combined together to form a new technique. However, it is very difficult to learn a Secret Talent because of the effort required to make your chakra send out two elements combined together at once, instead of one of the elements. Not only that, there are also risks to where their chakra can't mix the Ninjutsu together, causing a backfire to the user. Therefore, most characters only know separate Ninjutsu to stay away from risks and use their Ninjutsu at ease. Only talented characters are able to achieve their own Secret Talent.