Tsuna fires Soft Sky Flames behind him to support the powerful Hard Sky Flames unleashed in front of him. The attack was inspired by Kyoko Sasagawa saying that his friends will always support him.
Tsuna was able to perfect the X-Burner with the use of the X-Contacts made by Spanner.Its strongest blast record during the Choice Arc had a strength of 250000+ FV. Tsuna broke the record when he blasted Torikabuto's illusion with 300000 FV.
Other versions Edit
- XX-Burner: The X-Burner with increased power. With his Ring of the Sky Version X, Tsuna uses the arm thrusters to support himself and releases flames from both of his X-Gloves.
- Oath Flame X-Burner: Tsuna is capable of firing an Oath Flame charged X-Burner that does not require any time to balance the Flame output.
- Condensed X-Burner: An Oath Flame X-Burner that is focused with the power of the Earth Flame's Gravity Manipulation.