Chaos Theory Homeostasis II (幻相のホメオスタシス, Gensō no Homeosutashisu) is the ninth episode of the anime adaptation of the visual novel Steins;Gate . Okabe grows concerned over the drastic changes his experimentation is causing, and the IBN 5100 disappears from the lab. The only hope for finding a replacement rests upon the delicate shoulders of Feiris the cat girl.