Combination is the 81st episode of the Katekyo Hitman Reborn! anime.
Tsuna and Lal Mirch manage to find Kyoko at the house of the future Hana Kurokawa. During the fight with Gamma, Gokudera is almost killed but is saved by Yamamoto. Settling their differences, they decide to work together to defeat Gamma. Yamamoto is knocked unconscious during the battle.