Waking Up

It was the far future, where they invented an age-stopping machine. The Milano siblings, Cesara (an 14-year old girl) and Giulio (a 10-year old boy) from Italy, a country of Earth, are dressed up as professional boxers (but they're not real professional boxers), without boxing gloves, along with lots of preteens and early teenagers to become the Universe greatest defenders, the Youth Fighters. Will they pass their training missions, and increase their training skills to protect the universe from various threats around the universe, even the smallest can they fight?