Ling Yu 4灵域 第四季Ling Yu 4 — ONA • 12 episodes • Fantasy • Haoliners Animation. Track episodes, ratings, characters, and trailers on Animelist.ONA • Finished Airing • 12 Episodes • Studios: Haoliners Animation • Genres: FantasyRelated AnimeLing Yu 3 (PREQUEL)Ling Yu 5 (SEQUEL)