The System I Lit up Is Not Serious

This is a world where martial arts are rampant, where thousands of races compete for hegemony, the strong dominate the sky with one hand, and the weak linger... The protagonist's soul travels to another world, and the system is turned on at the beginning. However, this system is a bit unfair. It can make the protagonist infinitely stronger, but the premise is that the protagonist must become promiscuous! Others rely on practice to become strong, but the protagonist's strength depends entirely on surfing. Lighting up this unorthodox system, the protagonist goes further and further on the road of surfing. Many years later, the protagonist stands at the pinnacle of martial arts. Looking back on the past, he sighs, this person must be a surfer, and the more he surfs, the stronger he will be! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.