Complex sentence: Hidetaka Miyazaki, who served as director on "Demon's Souls" and "Dark Souls", acted as a supervisor, while the game was directed by Tomohiro Shibuya and Yui Tanimura.
Split into simpler sentences: Hidetaka Miyazaki, who served as director on "Demon's Souls" and "Dark Souls", did not return as director for "Dark Souls II". Instead, he acted as a supervisor while the game was directed by Tomohiro Shibuya and Yui Tanimura.