Writing prompt 3

The best fighter in history has always won by an overwhelming victory despite his lifelong goal being to have a fight against an opponent of equal strength. When he/she/they die due to old age, a ROB gives him the chance to fulfill his dream, but first he/she/they must fight the worlds greatest fighters in a 100 floor tower and only when he reaches the top will their wish be fulfilled

Also it is not intention to offend anyone, any of these characters can be whatever race, gender, or sexual orientation that you desire.