If you liked
FLCL
|
...then you might like
Mob Psycho 100
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Mob Psycho is actually a pretty unique and worthwhile series. Sort of like a mixture of FLCL, One Punch Man, Jujutsu Kaisen, and March Comes in Like a Lion. That may seem like a weird fusion, but it totally works in my opinion. Uses an exciting shonen action frame to discuss significant, resounding themes.
If you liked
3-gatsu no Lion
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...then you might like
Sousou no Frieren
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Frieren is a series that deemphasizes its own story (and characters, moral questions, power systems, philosophical intrigue, etc.) in favor of something far more valuable and far harder to communicate. It does this in a setting/frame/universe that is truly unique (and yet familiar), and where fundamental premises surrounding life are sometimes absent; the primary perspective is from Frieren, an elf (hence the name of the anime). I believe all these things imbue the series with the more valuable focus I mentioned to begin with. Yes, a lot of vague, indirect, and more or less meaningless words.....but intentionally so. Watch it yourself and generate your own thoughts; it's a wonderful/beautiful experience. Frieren is similar to March Comes In Like a Lion, Violet Evergarden, Kino's Journey, and Maquia: When the Promised Flower Blooms. I consider it befitting of the title masterpiece.
If you liked
Higurashi no Naku Koro ni
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...then you might like
Shiki
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Both are horror anime with psychological themes.
If you liked
FLCL
|
...then you might like
Tengen Toppa Gurren Lagann Movie 1: Gurren-hen
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If you enjoyed Tenga Toppa Gurren Lagann (either the movies or the series), you will probably appreciate FLCL. Both use an absurd but well-done art style, have chaotic plot elements, utilize mechs heavily, and are strange/avant-garde. The overall message of each series is different (FLCL's being more about maturation while Gurren Lagann more about overcoming), but both are bildungsromans at their core. All-in-all, pretty similar.
If you liked
Black Lagoon
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...then you might like
Canaan
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Another gun-slinging, depressing storyline. Lots of action and firefights. Revy and Canaan are pretty similar characters.
If you liked
ef: A Tale of Memories.
|
...then you might like
Violet Evergarden
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Beautiful stories that are play out like a work of art. Deep, emotionally-rooted themes emerging from specific individuals' stories. While ef is not in slice-of-life format like Violet Evergarden, the series share enough to make it on this list.
If you liked
Fullmetal Alchemist: Brotherhood
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...then you might like
Shingeki no Kyojin
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Both series are set up in a world of moderate (but not modern) technological development, sketchy governments, messed up abilities (idk if alchemy or titans are worse lol), and horror. Both possess psychological and action oriented plot events. Attack on Titan is like the more mature (seinen) thematic counterpart to Fullmetal.
If you liked
Jujutsu Kaisen
|
...then you might like
Chainsaw Man
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Chainsaw Man is like a completely off-the-rails version of JJK. Lot's of similarities between the series' characters and universe rules.
If you liked
Black Lagoon
|
...then you might like
Darker than Black: Kuro no Keiyakusha
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Gun-slinging, depressing storyline. Mafias, mercenaries, and illicit activities running rampant through a city. Of course, there are many aspects that differ, but overall they are very similar to each other.
If you liked
Ergo Proxy
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...then you might like
Fate/Zero
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These anime are just....sucky. Of course they are both fantastic series, but are set in a fatalistic world that is really really sucky for everyone; breaking free isn't hard, rather it's impossible and laughably futile. The main difference in the nature of their worlds is that at least in Fate/Zero the illusion of hope and light is cast....in Ergo Proxy it is never present at all. The themes and focuses are quite different between the two worlds, but both hold their own as solid watches. Ergo Proxy is more Greek-inspired (see Oedipus) and Fate/Zero is more 19th-century-Germany-inspired (see Nietzsche, Goethe's Faust, The Ring Cycle).
If you liked
Code Geass: Hangyaku no Lelouch
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...then you might like
No Game No Life: Zero
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Both main characters are, by nature, locked in a confrontation with the unjust and power-oriented world around them (and not just the world: the gods themselves). They use their strength, wits, and most importantly, their integrity/resolution to wage war. And then crap hits the fan, repeatedly, and everything becomes morally gray, but (as we see in the end) not nihilistic. Yes, there is meaning in struggle, in fighting, in overcoming. Lelouch gets more runtime than Riku and Schwi, but if two full seasons were made about them, it would be just as cool. Comparisons aside, Code Geass is more of a sci-fi world while NGNL Zero is high fantasy.
If you liked
Serial Experiments Lain
|
...then you might like
Boogiepop wa Warawanai
|
The story format and themes are practically the same in Boogiepop and Lain, and they also originated during the same era of anime. Serial Experiments Lain is definitely the better-made anime, but Boogiepop Phantom does bring some interesting things to the surface....lol, as if anything is really brought to the 'surface' in either of these anime. Interesting philosophical and moral questions comprise the fabric of both series, which questions are addressed in unconventional and thought-provoking ways. Just who is Boogiepop? And who is Lain? (And who is Rei while we're at it?)
If you liked
Kara no Kyoukai Movie 1: Fukan Fuukei
|
...then you might like
Fate/stay night Movie: Heaven's Feel - I. Presage Flower
|
First of all, watch all the Garden of Sinners movies, as well as all the Heaven's Feel movies (not just the first of each)....I guess that's obvious. Anyway, while the two series are produced by Type-Moon, there are similarities that run deeper between them. The most obvious is the respective juxtaposition of the two main characters in each series. If I were to give any more details, I would spoil it so I will leave you to watch away.
If you liked
Death Parade
|
...then you might like
Kino no Tabi: The Beautiful World - The Animated Series
|
If you're into slice-of-life anime with psychological themes, Kino's Journey and Death Parade are some of the better series you'll find. As the name might give away, Death Parade is on average a little heavier/darker, and a little more coherent; in that I mean that it culminates (kinda like Violet Evergarden). Kino is just as impartial as Decim, and often also put in the role to make weighty judgments. Idk, at least the series are fairly similar in my mind.
If you liked
Violet Evergarden
|
...then you might like
Kino no Tabi: The Beautiful World - The Animated Series
|
If you liked Kino's Journey, then you will definitely enjoy Violet Evergarden. Albeit, the two series and main characters have some important differences, but both stories are set in a slice-of-life format and in cool semi-modern worlds. Kino is definitely more impartial and nihilistic than Violet, though both start at basically the same point.
If you liked
Mahou Shoujo Madoka★Magica
|
...then you might like
Fate/Zero
|
Seriously, these two are a set. Gen Urobuchi created Fate/Zero and Madoka Magica at the same time, with the same thematic focus. There are so many parallels that can be drawn between the two worlds and stories. But of course, there is a major difference in the series that you will have to find out for yourself (otherwise, it would simply be a retelling). One is not complete without the other, so go on and watch both.
If you liked
Toradora!
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...then you might like
Kokoro Connect
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Both based in school, both have emphasis on character's internal development and emotions. Both have lighter and humorous parts supplementing the themes. Both are generally pretty good series.
If you liked
Shinseiki Evangelion
|
...then you might like
Serial Experiments Lain
|
In both Evangelion and Serial Experiments Lain, the main character undergoes a series of traumatic experiences that make them question their identity. Also, although the surface world of Evangelion seems relaxed and reasonably normal, the deeper world is nearly as dark as the Lain universe. Both are primarily psychological anime.
If you liked
Death Note
|
...then you might like
Zankyou no Terror
|
The premise of both is a genius teenager takes on the police, resulting in a battle of intellect. In both, the detective(s) set traps for the main character(s), the main character(s) falls for those traps but manages to recover, and the plot advances. In general, they very similar, almost identical in fact.