The Upgrade Specialist Withinside A Post-Apocalpytic Earth World

One day, the whole world suddenly fell silent, and everyone has fallen asleep at the sametime. Whilst, everyone was still in deep hibernation, the entire world has begun to undergo the process of rapid change and transformation. Animals, plants, and insects have all mutated, growing indifferently in size and proportions, regardless of the oxygen level, due to the influx of energy from other universes and overworlds. The streets and parts of metropolitan cities have now become plagued with hordes of monsters and wild mutated beasts. Many years later, the few who woke up in a world that is different than what they used to, and Jack Faust is one of these people. Finding himself to be withinside an old dilapidated room, covered in dust and plant vines. He quickly learns that he has an upgrading ability that would help him survive withinside this post-apocalyptic world.