Ryota Yamaguchi (山口 亮太, Yamaguchi Ryōta) was a writer for episodes in the fourth and fifth seasons of Sailor Moon. His first episode was episode 130 and his last episode was episode 200. Other animes he has worked on include DokiDoki! Precure, Ranma 1/2, The Vision of Escaflowne, and the original Hunter x Hunter series.