ここは俺に任せて先に行けと言ってから10年がたったら伝説になっていた。 (Series) favorite_border

Volume 1: Luck and his party of supreme mages were locked in a fierce battle to bring down the Demon King. In the heat of the relentless pursuit, Luck shouted to his companions: "Leave this to me — go on ahead!" To prevent a total wipeout, Luck resolves to fight on alone. He battles without end, and at last strikes down even the Demon King himself. But when he finally makes his way back to town, what awaits him is a world where ten long years have passed…