Tsuna flashes back to when Spanner was explaining how to use the contacts and balance the X-Burner's power. Shoichi Irie orders Iris and Ginger Bread to dodge the X-Burner. Iris, instead of dodging, makes the Deadly Stem Force combine into a Muscle Scrum. Tsuna unleashes his X-Burner at full power, defeating Iris, the Death Stalk Unit, and Ginger Bread. He also destroys three blocks of Merone Base with his blast.
Note: Bold + Italicized = First Appearance