[ Kakashi watches, impressed at Shikamaru's skill and the ease at which he performed the jutsu. He practically heard the wheels turning in Shikamaru's head just moments before he formed the seals with his hands, figuring out the exact calculations. He's only maybe a little surprised that Shikamaru's a fire type. Certainly hadn't expected that. He always thought Shikamaru was maybe more earth or water. Maybe lightning.

But then, he supposes it's not entirely surprising. ]

Have you learned any other Katon jutsus?

[ While the technique he used is certainly very effective, it has a drawback of requiring flint and takes more time to set up, in contrast with faster, more destructive attacks like Katon Goukyakkyu no Jutsu or Katon Housenka no Jutsu that only require careful chakra molding. ]