Yaowang Football Head Coach

Doping cannot be used in football, but there is a magical drug, a system developed through alien technology, used by me, the head coach of Real Madrid who wants to build China, to create magical Chinese football! I tried a new drug I developed myself, which transformed me from the body of a 50-year-old uncle into a 10-year-old child. But the story has just begun. I must complete the system conditions, develop new drugs, and use the functions of the system to become a football manager and drug king. Of course, I, a 50-year-old uncle with a 10-year-old body, still need to fall in love. What will happen in this harem story?