The fourth season of Tunshi Xingkong, also known as Swallowed Star, runs 175 episodes as an action and science fiction ONA, picking up the story from episode 86 through episode 260. The franchise is set on an Earth ravaged by the RR virus, which mutated animals into monsters and drove humanity behind walled cities. There, martial arts flourished and the strongest fighters became known as Warriors, the path Luo Feng set out on as a young man.