Weird and somewhat incomprehensible in places...
So, the external, obvious plot lines were red herrings. The actual plot of the series is Apollo's search for friendship, companionship, and a deeper understanding of humanity. He first treats Ganymede like a pet or worse, a bug in a jar. He plays with him and taunts him, but eventually he becomes more curious. He mocks poseiden for being so interested in humans, but then he begins to visit the human world daily. When Ganymede finally gives up on seeking freedom to prevent Apollo from becoming lonely, Apollo gains what he always secretly hoped for... A friend.
And this is not shounen ai.
Olimpos