Naruto Shippuden Episode 250 Link
Guy opens the Seventh Gate to counter Kisame Hoshigaki's "Great Shark Bullet Technique". While Kisame's attack is designed to absorb chakra and grow stronger, Guy's Daytime Tiger is pure air pressure (physical force), rendering Kisame's absorption ability useless.
Watch the intense battle between Might Guy and Kisame, featuring the opening of the 7th Gate: Naruto Shippuden Episode 250
In this episode, Naruto demonstrates his newly acquired Nine-Tails Chakra Mode. His speed is so immense that Killer Bee compares it to the "Yellow Flash" (Minato Namikaze). Guy opens the Seventh Gate to counter Kisame