Watch Yu-Gi-Oh! GX Season 4 full episode online free watchcartoononline.
Storyline: Ten years after the Ceremonial Battle, a teenage boy named Yuuki Judai heads off in order to join the Duelist Yousei School located on a remote island off the coast of Japan. There he meets his fellow students and gains a few friends, along with a few enemies. Judai is put into the lowest rank of Osiris Red, but he continues to test his skills against the students and faculty to prove his worth as a Yousei Duelist and earn the respect of everyone around him.