User opinions on 'Owari no Serafu' are mixed, with many praising its engaging post-apocalyptic and magical themes, while others find it disappointing, especially towards the end. Some viewers are captivated enough to rewatch it multiple times and express eagerness for a sequel. However, a few find the series lackluster and criticize the voice acting in the French version.

👍 Engaging post-apocalyptic theme

👎 Disappointing ending for some