This is a must see for Ghibli fans. The OVA has moments that remind you of all of Miyazaki's works. I'm fairly surprised Anno didn't contribute because the world has a strong Anno vibe. The art is fantastic and it does an amazing job of covering CG up. The world design is breath taking and personally I had no issue with watching similar scenes over and over. The story is convoluted, but I believe it's because you are witnessing multiple versions of a single event to tell a whole story, sort of like "Edge of Tomorrow" (horrible comparison).