Animation (9/10) - It has a distinct art style that is somehow reminiscent to its manga predecessor; There was also this case wherein later on throughout the run, the franchise switched its animation house to MAPPA so its quality even improved over time. For an anime, they did an good job making their characters expressive and it there wasn't much corners that were cut off for the sake of it.
Storyline (10/10) - As I previously mentioned, it was a well-written story; Its supernatural mechanics were very unique and during the earliest seasons, it has a very concentrated focus which then expands into a GREATLY more massive scale as the characters progress along with their conquests. It also presents a lot of intense dilemmas and scenarios along the way that makes you feel for them and understand its universe on a grander scale.
Soundtrack (9.5/10) - What I liked about their library is they created a balance between the use of atmospheric and heavy metal music which are two, contrast musical approach; Although its common denominator is all their songs aims to induce strong vocal conventions that makes listeners' hearts feel waned up and active. Which blends really well for the thematic of the series.
Overall - 9.5 out of 10
