Genkishi appears and attacks Tsuna. Tsuna blocks most of Genkishi's missiles with his X-Gloves and dodges them with his Hyper Intuition. Genkishi comments that the Guardians that he was fighting should be "turning into dust". Tsuna rushes at Genkishi and punches him, but Genkishi hides himself in an illusion. Genkishi easily blocks Tsuna's punches and slashes him in the back.
Genkishi equips his Ossa Impressione Hell Ring, Spettro Spada, and his Nebbia Numero Due, thus wearing the full Armamento da Guerra set. Genkishi says that he has special orders from Byakuran to crush Tsuna and comments that Tsuna should know their strength differences. Tsuna says that he knows Genkishi's strength, but still wants to fight. He then says two words to change the outcome of the entire battle: "Operation X".