I have not read many of the books, but that will change because "Call of the night" is a great series to read or watch, especially on nights you cannot seem to sleep early, to match the atmosphere of the show even more. The animation is beautiful and it is also unique in that not many animes focus on animations solely during the nighttime. The humor is quirky and can be wholesome or not... if you get my drift. So far there are only two characters so the character development is more in-depth compared to other series where there are many characters. All of the night owls especially should really watch this show!