Select Rock Lee and fight against Gaara. Open the first link, then use the special by pressing X as usual. He will do a combo before he grapples Gaara with his bandages, just like in episode 48 of the anime. Additionally, when your opponent has his or her back to a wall, press B until Rock does a double-kick to knock the opponent into the air, then press A to do an extra roundhouse. When the enemy's head faces the ground while he falls, press X to do Rock's special. When timed correctly, this combo takes about 50% of the opponent's life.