Kazuma is killed in his fight Verdia, but in that moment, a prior encounter comes into mind as his body rises from the dead, armed with a new, terrible power. Will it consume him, or be his ticket to the life he always wanted in a different and far more dangerous world. (Extreme AU elements. OP Kazuma who will fluctuate between OOC)
(MASSIVE SPOILERS FOR SOLO LEVELLING) It was over. He had won. The battle against the monarchs came to an explosive finish, one which granted a reward unlike any other, a chance to set it all right, until it was stolen from him. Now here he was in the body of a child, finding himself needing to level up once again. (Crossover with solo levelling obviously, with sung replacing Deku)