Operation X (オペレーションX(イクス)) is the 129th episode of the Katekyō Hitman Reborn! anime series.
Chrome finds Gokudera in the ruins of the battlefield. Meanwhile, Tsuna continues his battle with Iris and Gingerbread. Spanner completes the contact lenses which then allows Tsuna to use a full powered X-Burner aimed at Gingerbread and Iris.