Why does Homer wait until book V to bring Odysseus in the story?

In "The Odyssey," Homer waits until Book V to bring Odysseus into the story because he wants to establish the context and obstacles that Odysseus faces before revealing his return. By delaying his appearance, Homer builds suspense and emphasizes the challenges Odysseus must overcome in order to reunite with his family and reclaim his kingdom. This delay also allows Homer to set the stage for Odysseus' eventual triumph and provide a deeper understanding of his character.