The Isekai Hero Returns After The End

The Great Hero of the Fire Continent, Agniterasu, has finally achieved his life long goal, paved in blood and ash, and the head of the Elemental Dark God at pyked at the top of his Zweihander. The death of his comrades, the other elemental heroes, did not matter. They were all weaker than him and thus died in the final battle. He survived, he finished the fight, all with his own strength. After all those years when he arrived in this world, confused and terrified, after all those years where they thought of him as the weakest hero. All those days before he formed a pact with his most trusted partner and all those days before he solidified his resolution to be the greatest, all of them were now nothing but distant nightmares. Agniterasu, despite all the pain, walked forward, he was no longer weak. He was now the strongest Hero. ... Until he once again found himself back to his old world. "Huh?" All his levels, skills, stats were returned to their initial numbers, not even his system was with him. In all but a moment, Agniterasu, returned back to the weakest possible self he could be. Joshua Evans. But, hey. At least his partner came with him. 90% of his strength came from his pact with his partner after all.