The chronological order of movies is 2, 4, 3, 1, 5-7.
Garden of Sinners follows Shiki and Mikiya, two college students that work for The Hollow Shrine, a paranormal investigation service. What makes Shiki uniquely qualified for this job is her Mystic Eyes which allow her to see, among other things, death.
Story 9/10
It's hard to talk about the story because it's told so randomly out of order, but I still encourage anyone watching to watch the series in the existing order because, even though I was very confused in the beginning, this is one of those stories where if you keep watching to the very end all your questions get answered eventually.
Each movie centers around Shiki and Mikiya investigating a different case, always involving murder and the supernatural. Part of what makes it such a great mystery, however, is the minor details that you really have to look for. For example, you see a woman stabbing a boy to death, but if you look closely you'll notice there's no blood on the knife; this gets explained later in the movie and I really admire little details like that.
Plus, every movie climaxes with an awesome fight scene between Shiki and the killer that is just shounen-level exciting.
Also, I said you should watch the movies in existing order because sometimes a character will say something like "I guess Shizune's vision came true" and I'll be like "Who's Shizune? What vision?", but, after I watch the next movie, I say "Oh, that's Shizune" and I get this feeling of closure now that things make sense.
However, if I had one complaint it'd be how confusing some of the exposition is, especially whenever Touko tried to explain something supernatural.
Characters 10/10
I really think Psychological should be one of this anime's genres because, especially with Shiki, you really get to know who these characters are and learn what their motivations are.
Shiki: If there's one word to describe Shiki it's mysterious; she acts so secretive and her appearance with the fact she always wears a kimono, she talks in a masculine voice, and she never shows any emotion all just makes her more mysterious. Furthermore, as you begin to unravel the mystery that is Shiki she becomes even more amazing and terrifying. Shiki is a good person who just likes to kill people; I think Touko called her a "murderphile".
Mikiya: Mikiya isn't as complex as Shiki, but I do admire his devotion towards her and how he can overlook her murderous ways to still love her. Plus, Shiki's smart, but Mikiya really does all the actual detective work.
Touko: Touko is basically just around to spout exposition; she helps out sometimes, but mostly you just see her sitting at her desk smoking a cigarette.
Antagonists: Each movie has a different killer so I won't talk about them all, but I will say that it isn't like they're evil because they're the bad guys. The part where you learn the killer's motivation is my favorite part of every movie because it's always so creative and complex.
Overall 9/10
This is an amazing movie series, one of my favorite anime, and I encourage you to watch all the movies in order to hear the full story.
