最強で最速の無限レベルアップ (Series) favorite_border

Volume 1 synopsis: With "1,000x Experience Gain" and "Level Free," an ordinary boy becomes the strongest — at record-breaking speed! The ultimate underdog fantasy! Sakura Makoto is sixteen years old. Expelled from high school and with nowhere left to belong, he suddenly finds a mysterious relic appearing before him. That day, dungeons erupt all over the world. A level system awakens within humanity, and everything people once took for granted is turned completely upside down. Amidst this upheava...