The Stone Ocean manga has a considerable length. It consists of multiple volumes and chapters, but the exact number can vary depending on the specific edition or publication.
We can conclude that the trailer for the second season of " Purple River " is about the story of Hideki Purple River becoming the Light King. The trailer showed the scene of Shue Shikawa stepping onto the throne step by step, and it indicated that the plot of this season would change towards the development of the Light King. The production progress of the second season had already been revealed. There were a total of 52 episodes and it was expected to air in the second half of next year. The exact release date had not been determined yet.