Aku no Hana

Both have similar male protagonist - quiet, ordinary boy.. that makes some kind of contract with very unusual, mysterious girl. Both also have kind of 'erotic' theme. AnH is dark,serious and somewhat artistic while NnKX is light-hearted and meant to be funny. 

Super-slow paced shows with an ominous atmosphere. They both have rather unique animation style and have that same feeling to them. Artsy anime, basically.  

You wanted twisted depressed teenagers, desiring things they can't have, with a morbid idea of love, everything served in a peculiar artstyle? There you have.  

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

Dark and very controversial anime that deconstruct the romance genre and give you a disturbed feeling while you are watching them. 

Both have main characters that complain about being in a small town where nothing happens. Theyre both about guys in school that have their world turned upside down by meeting a new girl. both have unique art styles. 

School life, with an added unnerving edge rarely seen in fiction. Until the latter stages of The Flowers of Evil's manga, I had thought of it as a sort of fictional suicide note where the normality of life would eventually crush its lead. And the anime amplified that feeling tenfold with the realism added by its rotoscoping (both titles are low-budget yet artistic) and its ambient soundtrack. The execution just gives off a feeling of undefined dread. Flowers and King of Pigs are different and the same. The emptiness and bleak school life is an obvious linking factor but Flowers relied far more on atmosphere and puberty / sex. Pigs doesn't have a sexual edge (all-boy school; younger characters) and, instead, focused heavily on preteen violence. Flowers does have what you could describe as physical bullying by Nakamura, but it's nearly all psychological, where as in Pigs it was more balanced. When you strip away the violence and sexual aspects of the two, what you're left with is a desperate desire to escape the shackles society imposes on children as they grow up and/or enter adolescence. The leads in both series are pushed to breaking point by peer pressure and the need for social conformity. read more 

Dark, serious and strange. Both have lots of intense character development that delve deeply into who these people are and what drives them to do what they do. Both have themes of depression and insecurity. Seems like a lot of people don't like Aku no Hana. I love it personally, and if you're a fan of that show too you'll probably also like Evangelion. You've probably already seen it too if you're into psychological anime enough to have found Aku no Hana, so I don't even know why I'm writing this. 

Knowing their feelings and mentality, a girl will take advantage of the perverted side of a boy who is in love to wrap him in his game, making him go through uncomfortable experiences, making him think about his actions and trying to understand what he really thinks about him, from her and their relationships. 

Both shows deal with characters who feel burdened by society and responsibilities. In both series, characters defy social rules as an act of rebellion and this leads to all sorts of conflicts. 

They both feature a socially awkward main character with very few friends. The amount of cringe moments is respectively high in both anime, and while not necessarily bad, if you don't mind it in one you shouldn't mind it in the other. You'll find yourself wishing you could make decisions in place of the main characters as you watch them fail miserably at the simplest tasks; however, Watamote uses a more comedic approach where Aku no Hana was dark and almost nihilistic with its atmosphere.  

Different is better. As soon as something comes along that isn't a harem and/or doesn't have generic moeblob character design, BEST ANIME OF THE SEASON! For better or worse, this is ALWAYS how it goes. In the case of Tatami it's highly regarded across the board since there wasn't any manga artwork to disregard for the purposes of ART. Aku Hana is FAR more of a love/hate series; people familiar with the source material generally disliking it and people unfamiliar often labeling it as the best anime of the season. The approach of both series is, simply put, style over substance... and cheap over expensive. Aku Hana had real people/locations rotoscoped. Tatami often used real stuff as backgrounds and/or flashed through images of real things, with artsy/unfinished drawings of the characters themselves. Aku Hana's stylistic selling point, rotoscoping aside, was turning one panel transitions into repetitive eight minute walks. Tatami's was repeating the same episode over and over, with the same characters playing the same roles and there being no character growth in any of those episodes. Any and all failings relating to substance should be overlooked with these two. Half an episode dedicating purely to walking is more important than pacing. Likewise, the same events playing out with minor differences matters not when it moves the soul with an idea. If you don't approach these two with that mindset, disappointment awaits. There is one key difference between the two: for Tatami you'll want the pause button handy if you have any hope of being able to read all of the subtitles. For Aku Hana, it's the opposite: you'll want the fast-forward button at the ready whenever anyone starts walking. An ironic difference, for sure. read more 

Although they are quite different in plot, Aku no Hana and Colorful are similar in mood and atmosphere. While watching both of them you can feel a kind of tension. Both of them are psychological dramas with slice of life elements, where protagonists are in a normal everyday situatution first, and as the story goes on, they learn more and more about the dark side of the people around them, and also about themselves. One of the main differences is that Colorful has also supernatural elements and is in general more optimistic than Aku no Hana.  

The two anime are very similar in atmosphere. Both are set in small towns that are surrounded by mountains, giving off unsettling vibes. Both shows make heavy use of rotoscoping which makes them feel different from other anime. Both have minimalist soundtracks that accentuate the eerie feeling. 

Both shows are psychological shows with some zany "realistic" character designs. Kuuchuu is about an array of psychological problems while Aku no Hana is about growing up. 

While the basic setting/environment of these two anime are different, they both have male main characters who suffer from anxiety and and considered on the fringe of society. The main female leads both have "contracts" and are centered around bringing the male leads out of their shells. Aku no Hana has a darker tone than NHK. 

Aku no Hana gives some kind of dark vibe, grain of interest out similar to Death Note. Also, it seems like both of the stories are involved with a weird book/notebook that plays a role in the story. So if you liked Death Note and are up for calm, yet creepy stories, you should give Aku no Hana a try. 

Its a really hard understanding story, mental ill main carathers and a sub-love story 

Both products often have scenes in the main character's family house. I don't know exactly how explain it, both products gave me a strong sense of the human social life and they showed me his beauty. I can understand that the similarities are a bit tiny, but I was unable to ignore the strong vibes of Aku no Hana that Parasyte continuously gives me. 

- Offbeat, gloomy atmosphere - Some of the best OST's in anime - teen angst - extremely unsympathetic, cowardly mc who has little control over his own life - not much progress story-wise but much insight in the mind of teens 

Come and stay for the spooky atmosphere. Boogiepop and Other has actual supernatural stuff going on and there's a mystery. By contrast, in Flowers of Evil you know exactly what is going on but there's hella anxiety. 

Although the actual stories aren't overly similar both shows manage to create a dark, unsettling atmosphere with a distinctive visual style. Beyond that Boogiepop Phantom plays around with the idea of people hiding their fears, and bringing them to the surface in the form of isolation, madness and insecurity. Aku no Hana might not explore exactly the same themes or fears, but the similarities between the two in terms of atmosphere, tone and how it makes the viewer feel are definitely there. 

Both deal with horrific situations and delve in the mind of the protagonist. 

Both protagonists are influenced by girl. Both of them are in love with other girl, and in order not to lose her trust, are required to comply the orders of the first girl. 

Both are horror animes made with rotoscoping (the animators are tracing live-action footage frame-by-frame to recreate it as animation). 

The girl bulliyng the shy boy that likes a masterpieces. Such as books. Has his own rich inner world. However he still a pervert. By the way she helps him with his own social dilemma  

In both these titles, the protagonist is a boy who is interested in literature. And then there are 2 girls, and emotions... The main characters are driven by their feelings, make mistakes and drama occurs. I found these shows quite entertaining until the inconclusive ending, which did not satisfy me. But I would recommend these shows for some passionate drama. 

Sometimes slow-paced, sometimes dark, and sometimes a bit pretentious, Aku no Hana and Kaiba both give out a very unique feel with their unique art style and artistic feel. Aku no Hana is way better in my opinion, but for anyone looking for an unique experience, look no further than these two anime.  

Almost the same feeling, great psychological atmosphere. The two main characters made a mistake that changed their life. While Kaiji risks his life in games and gambles that lead to stressful situations, Kasuga risks his place in the japanese society. Since Aku no Hana is quite hated, I'll add : don't judge a book by its cover, make your own opinion, the situation of Kasuga is a big deal, and the tension is real. Everyone has made a mistake in his life, and everyone tried to hide it by fear of the consequences : that's the situation in which Aku no hana's main character is, and it's very well done and very stressful. read more 

Another and Aku no Hana give off the same eerie feeling, they're both very real and psychological, and have you on the edge of your seat waiting to see what may or may not happen. Another is more shifted in the horror category where as Aku no Hana lies deeply in the Psychological. 

Both psychological anime with good character development. Both are really similar in the aspect that it shows how people in life can be mentally unstable, these are both great anime. Oh, and they both have realistic looking characters that don't look anime-ish and more human drawn. Although Paranoia Agent still has more anime-style drawn characters, they still look a lot more Japanese than most anime. 

Both are about relationship of strange girl, who feel herself an alien in this world, and "normal" guy. 

Once again, different is better. The female lead hate the normal things, and tries to drags the male character into her "world". 

Similar themes, drama, horror, romance. Not to mention both have unique, interesting realistic art styles. 

Negishi is Kasuga in an alternate universe where his corrupter extraordinaire (Nakamura) is his band manager. Here, his love for verbose literature is an affinity for Swedish pop. His blossoming perversion is a shameless alter-ego. His crush on an actually-totally-attainable-if-it-weren't-for-plot idealized girl is a crush on an actually-totally-attainable-if-it-weren't-for-plot idealized girl. Some common themes: moral deterioration and distress it causes.... yes, even when played for laughs. To quote Aku no Hana's MC himself (paraphrasing) "comedy and horror are similar in that they both stem from the element of surprise." The cherry on top? Same director. 

When I started to watch Ping Pong the art style from Aku no Hana popped in my mind. I didn't really like Aku no Hana that much, but if you like this "realistic" type of art give it a try. Note: Aku no Hana is a lot darker than Ping Pong and isn't recommended for children. Also completely different besides the art.  

Symbolic anime using a unique style to enhance atmosphere, mood, music, and sound. Both series are well known for their symbolism. 

Both cover the trials of youth and just how misaligned our desperate struggles and percieved notions of supremacy really are when trudging through the challenging of discovering just who we truly are as an indiviudal. Whilst aku no hana excels at suspense and dread, yahari masters social distance and interpersonal anxiety. Either they both are so incessantly focused on self identity it's outrageously addictive.  

Both concepts are a bit twisted. (I would recommend reading Aku no Hana because the anime isn't done yet.) I love them both and thought that they fell into similar categories because of the darkness of them both.  

In brief, give it a try if you're into: atypical tales of romance, reddish haired girls responsible for churning out plot, strong usage of allusions to classical literature (see Psycho-Pass as well), gloomy gloomy moods, beautiful ambient soundtracks, ominous eyeball plants. If you're bored and wanna read something: Both Zetsuen no Tempest and Aku no Hana have very strong literary references (quoting, and relying on their respective pieces), implausible plots, and awkward love triangles. Zetsuen has Shakespeare's Hamlet and the Tempest, while Aku no Hana has Les Fleurs du Mal by Baudelaire (which personally makes me think of the gloomy baudelaire children from the series of unfortunate events, but that's something else entirely). These literary references are important if not crucial in both Zetsuen and Aku no Hana. While there are complaints about the animation style of Aku no Hana (I personally like it. The expressions and nuances, the fidgety fading and jerking, really make it all the more disturbing), I have to say that both have pretty great dramatic soundtracks. (please listen for the ED of Aku no Hana). If Aku's animation wasn't your thing, then Zetsuen has excellent animation by traditional terms. Zetsuen is 26 episodes of magical action-y revenge, loopy plot/time line, and messing-with-your-sense-of-logic, while Aku no Hana is 13 episodes of suspenseful-psychological, really twisted Bildungsroman, making-you-uncomfortable. Both plots are centered around the love of a girl, but only one involves the fate of the world, guess which one. Awesomely confusing paradoxes vs completely unsettling, insanely capable vs incredibly gutless protagonists; take your pick. Oh there are also evil blooming eyeball things in both, if that's what you're into, referred to as fruits and flowers respectively. read more 

Aku no Hana starts out very imaginative like Deus Ex Machima where the flower grows from the person's mind. I love Aku no Hana's look much more though as it redeems itself for looking like true Japanese and the landscape of it is also realistic too. Mirai Nikki also has that eerie setting and plot along with Aku no Hana. 

You will say that they are not similar to each other, well, Aku no Hana is too dark, and Kokoro Connect is more light... But this two titles analyze people's, especially high-schooler's psychology. So if you liked Kokoro Connect because of psychology you will definitely like Aku no Hana too.  

Yeah, there's really not much in common between these two shows but I don't think I've seen anything else like Aku no Hana and since I can't just list recommendations without having comparisons...? Aku no Hana or 'Flower of Evil' iirc is an oddly animated and terrible looking show that deals with real human issues of alienation and mental illness. Golden Boy is a short, comedic skit show about a young man who seems underwhelming at first glance but always exceeds expectations before anyone knows any better.  

"Harmonie" and "Flowers of Evil" / "Aku no Hana" both revolve around a introverted male protagonist who has a crush on the attractive and popular girl in his high school homeroom class. Due to respectively unique reasons for both anime, surprising relations soon arise as they begin to interact with each other.