I Have 900 Million Years of Skill, but Unfortunately I Can Only Be a Dog Licker

Su Feng is very depressed! He traveled to the world of mixed martial arts with the system that gave him 900 million years of skill! However, he couldn't use it. Because he has activated a licking system, only by licking can he get a return on his skill. So Su Feng found another way to live in the world of mixed martial arts. I don't care about licking anything. Yao Yue is aloof, right? Then I will use a small whip to beat you until you become my licker! Dongfang Bubai likes to dress up as a man? Then we are brothers of the opposite sex! Xiao Zhao is cute and cute, right? This is my little angel! ... As time passed, Su Feng suddenly felt that something was wrong with the picture. I am the licker! They have all become their own lickers. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.