Hana to Alice: Satsujin Jiken

Rotoscoping, teenage girls running around town like no one cares, dark school mysteries. Aku no Hana is way darker though. 

Hyouka is an adaptation of the Koten-Bu Novel series, beware that it doesn't have an actual conclusion. It's similarly slow-paced and character driven narrative nestles it into the same niche as Hana to Alice. Hyouka utilises mundane mysteries--which are great on their own--as a backdrop for its characters. Hyouka has similarly high-production values and the same sort of deadpan humour, with distinct and unique characters.  

Hibike Euphonium and Hana and Alice are similar in a few ways. They are both melodramas which have a focus on friendship. However, friendship isn't Hibike Euphonium largest focus, the school band is. They both have made the characters feel more natural than most anime, but Hibike Euphonium is slightly more on the "artificial" side.  

The art style is similar and they both have the same warm bright summery energy 

Okay Chunibyo is much more flashy and crazy than Hana to Alice, but it has that theme of new friendships and helping someone who is not all there mentally recover by solving a mystery. But most important of all the characters in Hana to Alice are definitely Chuunibyou. 

Ping Pong The Animation is more heavy-handed in its seriousness, but it uses ping pong like Hana to Alice uses its mystery to develop its characters. Of course, that's not the only similarity they share--they both also have a similarly unique art/animation style rarely seen in anime, so if you're seeking somewhat experimental art/animation styles, Ping Pong The Animation is a good bet. To add to that, Ping Pong The Animation is also a really great character-driven series. It is strong in every aspect, including its story and plot progression, which is something that Hana to Alice fell short in. 

Narrative progression and setup for both films are eerily similar, but the characters are vastly different. They are both stories of two girls and their friendship, but Marnie's protagonist is much more similar to Hana Arai, Hana to Alice's deuteragonist. The two leads are switched in the movies, meaning that the change of perspective makes the story feel new. In the same way that Hana is isolated, Anna is also isolated because of a past event that broke their connections with a person important to them. They're both slow-paced and only use their plots to further their characters. Marnie is slightly more plot-heavy, but Hana to Alice's plot only exists to give the film a vague sense of direction. read more 

Hana to Alice and Another are both about a transferred student who can't get along with the rest of his/her classmates and that is due to a mystery about a dead student from their class .