If someone asked me to describe the show in two words, my answer would be: sensory overload.
Wouldn't call it a masterpiece (as some people claim it to be), but the visuals are astonishing with their vivid colours and fascinating smooth movements that are aesthetically pleasant to watch. However, when it comes to the story, the narrative appers somewhat messy and inconsistent in relation to what's happening on the screen. Focusing attention on both animation and deep philosophical discussion, therefore, can be quite challenging at first, so you will surely feel a little dissociated in the beginning.
Since the show raises fundamental questions concerning love, deep existential fear of death, insecurity, problem of establishing connection with other people, it may seem appealing to the greater audience. Hovewer, since the narrative is emotionally overloaded and structured in a pretty disorganized, odd manner, providing no direct questions and answers, as if to imitate the irrationality of our fleeting existence, it's hard to properly rationalize events depicted on the screen. It's a deeply emotional story, presented through bits of human experience with things that are hard to comprehend, and though it looks and sounds extremely pleasant, the overall idea is eluding. I guess it was a fine attempt to personalize our subconscious and give it a proper voice.