i would say the quality of this anime is 8/10 subjectively, some choices like the background characters have shadow over their head bother me a little but that's fine. NOW if we're talking about the story there's nothing really special, it's typical but it's fun to follow. However, I don't really like the ending. There's a lot of question in my head when it ends and it doesn't feel like it concludes anything? It still has a lot of mystery but it seems there's not gonna be any continuation. It'll make sense to think of this anime as a promotion to the original source. Onside notes, I like the opening and the ending for this anime. :)