What is strength? Different people would have different opinions. Some will say money, others' political power, others' physical might still, some may say love. But money is just a string of numbers. Physical might is fleeting. Political power can be lost, and so can love. As such, my choice is willpower with the will to become stronger. Everything can be achieved.
As a world master with the weakest world origin, Sorren must show everyone that even the weakest beings can dominate. As his race is new in this interstellar era, he must become one who controls this era, or his race may become the slaves of others.