Fairy Tail 434 see’s the destruction of the God War Ikusatsunagi as we see Natsu climb on top of the body of Ikusatsunagi to get to his head and quickly and swiftly destroy it with all of his mighty strength. Everyone believes in Natsu as he climbs on top of it. Furthermore, Arlock is surprised as ever to see Natsu destroy his summoning.
Fairy Tail 433 see’s Arlock getting bashed down by the strong Natsu, when he realises he’s defeated he goes ahead to summon one of 18 War Gods from Yakuma. Natsu realises that what Arlock has done is nothing but them sacrificing to bring Zeref to them. Natsu is so pissed that he seems like he’s going to kick Ikusatsunagi’s ass.