A masterpiece. The truth is that I loved everything about the series. His construction of the world, characters and art. And nothing to say about the music, a marvel. The series begins with a huge cliffhanger, however despite knowing or intuiting how it would end, I thoroughly enjoyed each chapter. I hadn't read the light novel, but watching the anime immediately made me want to, and I’m glad there are more volumes. I saw it in one day, that shows how much I liked it hahaha, give it a try, I highly recommend it. An anime from my point of view very underrated.