Supreme Man

Ye Hao... the leader of a South African mercenary group, obtained a ring from outer space during his time as a mercenary. Within the ring lies unprecedented high-tech advancements on Earth, awe-inspiring weapons, and a UFO capable of interstellar travel... Various reasons led this young man, who served as a mercenary in South Africa, to return to the city, embarking on a path of life dedicated to protecting beautiful women. — Description from novelcodex.org