俺だけダンジョン装備がレベルアップ！　～追放された無能職の錬金術師は、錬金を繰り返し最強装備を作り出す。勇者も魔王も神々もＳＳＳランク武器には勝てません～ (Associated Names)

20 years ago, a huge tower that pierces the sky suddenly appeared in Tokyo Bay. And the dungeon weapon with mysterious power excavated from that tower changed the world. The equipped item is impervious to bullets, can fly through the air, and even crushes rocks with bare hands. People explore dungeons with such dream-like power-giving…