Well you gave me a good fight but in exchange for not destroying the earth I want not only free food anywhere on Earth but I want a favor. I want you and your friends to help me win over that beautiful friend of yours that has cat ears and a tail. She is not only beautiful but as powerful as I am and I can sense divine energy in her. Beerus says speaking to Goku who was beaten smirking. The destroyer god showing mercy for this simple favor in order to not destroy the Earth.