I Upgrade Infinitely

In order to earn enough money to extend the life of his seriously ill sister, Su Luo gave up his studies and came to an underground city to become a black boxer. However, one day a few years later, while sending all the money to the hospital, Su Luo accidentally traveled to a different world. During the awakening ceremony, due to biased rules, he was penniless and only obtained the lowest F-level qualification, and was teleported into the maze without acquiring any special power. Monsters are everywhere here and there are many dangers. Because he failed to awaken, he was abandoned by his teammates, expelled from the team, and walked alone in the maze. At this moment, a panel message suddenly popped up: [Complete the novice mission: no chance of survival] [Unlockable hidden profession: Adventurer] Unlock? On the verge of death, Su Luo chose [Yes] Upgrade system changes [Current level: lv0] [Congratulations to the adventurers, you are about to embark on a journey to a different world with unlimited upgrades]