sentences:  Natsu is able to petrify flames by harmonizing with them and is able to transform into weapons belonging to the first Vongola boss.Mantello Di Vongola Primo (Mantle of Vongola Primo) which acts as a barrier that wraps around Tsuna like a cloak and Mitten Di Vongola Primo (loosely translated as "Primo's Glove"), where Tsuna can use the technique Big Bang Axle.Tsuna received an upgrade from the metal craftsman Talbot.