最強で最速の無限レベルアップ　～スキル【経験値1000倍】と【レベルフリー】でレベル上限の枷が外れた俺は無双する～ (Associated Names)

One day, dungeons appeared all over the world. A level system appeared in humans, and the sense of values ​​so far collapsed. Meanwhile, I found a place in the dungeon with the cheat skills [experience value x1000] and [level free].