10 Underrated Anime Series You Must Watch in 2026

We’re talking about shows with better writing than most mainstream hits. Shows with animation styles so unique they look like nothing else on the planet. Shows that tackle artificial intelligence, grief, political corruption, and the meaning of humanity through characters who happen to be walruses, shadow creatures, and singing robots. These are the anime that don’t just entertain you — they change how you think about storytelling itself.

In this article, we count down 10 criminally underrated anime series you absolutely must watch in 2026 — ranked not by their popularity scores, but by their ability to surprise, challenge, and genuinely move you in ways that the mainstream never quite manages.

Why Underrated Anime Often Hit Harder Than Mainstream Hits

Here’s something that every experienced anime fan knows but rarely says out loud: the most popular anime are rarely the best-written ones. Mainstream popularity is driven by hype cycles, flashy animation clips on social media, familiar power-scaling debates, and sequel momentum. None of those things have anything to do with storytelling quality, thematic depth, or emotional resonance.

The shows on this list flew under the radar for a variety of reasons — unusual art styles that put casual viewers off, unconventional premises that didn’t fit neatly into genre boxes, or simply the misfortune of airing in the same season as a massive mainstream title. But every single one of them rewards the viewer who gives it a proper chance with something the big mainstream shows rarely offer: genuine surprise.

According to anime tracking sites like MyAnimeList and community discussions across Reddit and Crunchyroll, all ten of these series carry exceptionally high ratings from viewers who actually watched them — they just never had the marketing muscle or social media moment to break through to casual audiences [web:96][web:97]. That changes today. Let’s get into it.

10. Odd Taxi (2021) — The Mystery Thriller That Nobody Expected

Odd Taxi

Genre: Mystery, Psychological Thriller, Social Commentary
Episodes: 13
Where to Watch: Crunchyroll, Funimation

Every once in a while, an anime comes along that has absolutely no right to be as good as it is. Odd Taxi is that anime. On the surface, it’s a mystery thriller about a depressed, antisocial walrus taxi driver named Hiroshi Odokawa who gets drawn into a missing persons case through his various passengers. The entire cast is made up of anthropomorphic animals. It looks like it should be a children’s show. It is most definitely not a children’s show [web:106][web:110].

What Odd Taxi actually is, is one of the tightest, most brilliantly written mystery narratives in the history of anime. Every single scene matters. Every throwaway line of dialogue is a planted detail that pays off later. Every character — from the aspiring influencer who wants to go viral, to the struggling comedy duo, to the mysterious nurse — is connected to every other character in ways the show reveals with meticulous, deeply satisfying precision [web:96][web:107].

The finale is, without exaggeration, genuinely shocking — one of those endings that makes you want to immediately restart the first episode to catch everything you missed. Odd Taxi also doubles as razor-sharp social commentary on modern Japan’s obsession with social media fame, loneliness, and the desperate need for connection — themes that hit just as hard in 2026 as they did when the show aired in 2021.

“This is a criminally underrated, underwatched hidden diamond gem of an intricately made complex show YOU DO NOT WANT TO MISS OUT ON.” — MAL Reviewer [web:107]

Watch it if you like: Durarara, Baccano, Breaking Bad-style mystery plotting with anime style.

9. Vivy: Fluorite Eye’s Song (2021) — The AI Epic You Completely Missed

Genre: Sci-Fi, Action, Music, Time Travel
Episodes: 13
Where to Watch: Funimation, Crunchyroll

From Wit Studio — the same team behind Attack on Titan and One Piece live action — and written by Tappei Nagatsuki, creator of Re:Zero, comes one of the most criminally overlooked anime of the 2020s. Vivy: Fluorite Eye’s Song follows Diva, a singing AI whose singular programmed mission is “to make everyone happy with her songs.” Then, a time-travelling AI arrives from 100 years in the future with a message: an AI revolution is coming that will kill all of humanity — and Diva is the only one who can stop it [web:111][web:114].

What follows is a 13-episode masterclass in AI storytelling that asks questions that feel more urgent every year: What does it mean to have a purpose? Can a machine have a soul? Is free will possible for something that was programmed? The show is divided into multiple time-jump arcs, each one changing the world around Diva in profound ways while she gradually evolves from a simple singing automaton into something far more complex [web:117].

Vivy’s production quality is absolutely breathtaking — the action sequences are some of the best-animated scenes of 2021, and the music, as you’d expect from an anime literally about a singing AI, is extraordinary. The final episode delivers one of the most emotionally powerful send-offs in recent anime memory. In our honest opinion, this is what AI storytelling looks like when it’s done with genuine intelligence and care.

Watch it if you like: Re:Zero, Terminator-style time travel stories, beautifully animated action with emotional depth.

8. Ranking of Kings (Ousama Ranking) — The Fantasy That Looks Like a Children’s Book

Genre: Fantasy, Adventure, Drama
Episodes: 23
Where to Watch: Funimation, Amazon Prime Video

Here is a show that the anime community spent three full months underestimating before finally, collectively, losing their minds over it. Ranking of Kings looks — and this is crucial — like a gentle children’s fantasy. The character designs are rounded and soft. The color palette is warm and storybook-like. The protagonist is a small, deaf, mute young prince named Bojji who everyone in his kingdom dismisses as weak and useless [web:112][web:115].

None of that prepares you for what the show actually is. Ranking of Kings is one of the most emotionally precise, thematically rich, and genuinely devastating fantasy anime of the 2020s. Beneath its deceptively gentle appearance is a story about discrimination, power, love, betrayal, and the courage it takes to remain kind when the world repeatedly tells you that kindness is weakness [web:109][web:115].

The series’ greatest trick is how it uses its storybook aesthetic to set up expectations — and then systematically destroys them. Characters who appear to be straightforward villains become heartbreakingly sympathetic. Characters who seem heroic reveal deeply complicated motivations. As CBR noted in 2026: “Five years later, Ranking of Kings is better than ever — one of anime’s sharpest modern adventures that never rushed its tenderness or undercut its darkness.” [web:115]

Watch it if you like: Fullmetal Alchemist: Brotherhood’s emotional depth, fairy tale aesthetics with genuinely dark storytelling.

7. 86 Eighty-Six — War, Racism, and Humanity in Anime Form

Genre: Sci-Fi, Military, Drama
Episodes: 23 (across 2 cours)
Where to Watch: Crunchyroll

In a futuristic nation called the San Magnolia Republic, the government tells its citizens that their war against autonomous drones is being fought without human casualties — that fully automated weapons do all the fighting. It’s a lie. The “86” — citizens deemed racially inferior and stripped of their humanity — are the ones fighting and dying in those machines, out of sight and out of mind [web:93].

86 Eighty-Six uses military science fiction as a vehicle to tell a story about racism, dehumanization, and the moral complicity of people who benefit from a system they choose not to look at too closely. It is, in other words, one of the most politically and morally serious anime series of the last decade — and it did all of this while also delivering some of the most breathtaking mecha combat animation of its era, courtesy of A-1 Pictures.

The central relationship between Lena — a sheltered young Republic officer who is the first person to actually treat the 86 as human — and Shin, the quietly devastating leader of a 86 squadron with nothing left to lose, is one of the most emotionally complex character dynamics in recent anime. This is the kind of show that makes you think about real-world parallels long after the credits roll.

Watch it if you like: Attack on Titan’s political commentary, Violet Evergarden’s emotional precision, Code Geass-style military drama.

6. Sonny Boy (2021) — The Most Philosophical Anime Ever Made

Genre: Supernatural, Psychological, Coming-of-Age
Episodes: 12
Where to Watch: Funimation

This one is genuinely not for everyone — and that’s exactly why it’s on this list. Sonny Boy follows a group of high school students whose school suddenly drifts into a void between dimensions. Students begin developing supernatural abilities. Strange rules govern the drifting worlds they pass through. And the show spends its entire run asking the kind of questions that most anime would never dare to touch: What is identity? What is freedom? What does it actually mean to grow up?

Sonny Boy is directed by Shingo Natsume — also known for directing Space Dandy — and it has the same DNA as that show: a refusal to explain itself, a commitment to atmosphere over plot, and a willingness to be genuinely, unapologetically strange [web:93]. Its visual style is bold and experimental. Its soundtrack is astonishing. Its ending is one of the most quietly devastating conclusions in recent anime memory.

We genuinely believe Sonny Boy will be reassessed as a masterpiece within a decade — the kind of show that only reveals its full depth on a second watch. Right now, it sits with a small but ferociously devoted fanbase who understand exactly what it’s trying to do. You could be one of them.

Watch it if you like: Serial Experiments Lain, Space Dandy, anime that prioritizes meaning over plot momentum.

5. Summertime Rendering (2022) — The Perfect Mystery Thriller

Genre: Mystery, Thriller, Supernatural, Romance
Episodes: 25
Where to Watch: Disney+

If you enjoy mystery anime, time loop narratives, or genuinely terrifying supernatural horror — and somehow haven’t watched Summertime Rendering yet — drop everything and start it today. This is, in the opinion of many dedicated anime fans, the most satisfying mystery thriller anime of the 2020s — a show that perfectly executes every single element of its genre without a single wasted episode across a full 25-episode run.

The story follows Shinpei Ajiro, who returns to his island hometown for the funeral of his childhood friend Ushio — only to quickly realize that something is deeply wrong on the island. People have “shadows” — perfect dark replicas that can copy a person’s appearance and memories — and every time Shinpei is killed, he wakes up in the past, armed with knowledge of what’s coming but with the clock constantly ticking [web:91].

What makes Summertime Rendering extraordinary is how it uses its time loop mechanic. This is not a show where the protagonist simply tries different approaches until one works. Every loop carries real emotional weight. Every death matters. The show’s ending is one of the most emotionally satisfying conclusions in recent anime — built on 25 episodes of meticulous groundwork that all pays off simultaneously.

Watch it if you like: Steins;Gate, Re:Zero, Higurashi — time loop thrillers with genuine emotional stakes.

4. Dorohedoro — Chaos, Comedy, and Dark Genius

Genre: Dark Fantasy, Action, Dark Comedy
Episodes: 12 + OVA
Where to Watch: Netflix

We need to talk about Dorohedoro. This is an anime set in a dystopian world where magic-users use a labyrinthine slum called “The Hole” as their personal testing ground — experimenting on the powerless residents who live there. The protagonist is a man named Caiman who has the head of a lizard, no memory of his past, and a man living inside his mouth who examines the faces of magic-users he eats [web:94].

If that sentence didn’t lose you — welcome. You’re going to love this. Dorohedoro is genuinely one of the most original anime ever made. Its world is unlike anything else in the medium: grimy, violent, darkly funny, and populated with characters so bizarre and so loveable that you become genuinely attached to them despite — or perhaps because of — how deeply weird everything is [web:94].

The show’s greatest achievement is its tone. It manages to be laugh-out-loud funny and genuinely dark at the same time, in a way that never feels forced or inconsistent. Characters who are objectively terrible people become fan favourites because the writing understands them completely. The world-building is dense, imaginative, and rewards attention. And the mystery of Caiman’s past, unfolding across the season, is surprisingly moving when it finally resolves.

Watch it if you like: Berserk’s dark world-building, Devilman Crybaby’s edge, but with an unexpected sense of fun threading through it all.

3. Mushishi — The Slowest and Most Beautiful Anime You Will Ever Watch

Genre: Supernatural, Slice of Life, Mystery, Historical
Episodes: 26 + specials
Where to Watch: Crunchyroll, Funimation

Mushishi is the complete opposite of everything that dominates modern anime discourse. There are no power levels. There are no tournament arcs. There are no dramatic rivalries or world-ending stakes. There is just Ginko — a wandering traveler with white hair and one eye — who roams ancient Japan helping people whose lives have been disturbed by mysterious life forms called Mushi [web:97].

Each episode of Mushishi is essentially a standalone short story. A woman who can hear the sound of light. A boy who leaves trails in water that become rivers. A girl whose sleep causes the world around her to freeze. The show approaches these supernatural phenomena not with action or drama, but with quiet wonder, deep empathy, and a profound respect for the natural world. It is, in the truest sense, meditative television.

Mushishi is the kind of anime that you watch when you want to feel genuinely at peace — when you want a story that respects your intelligence, doesn’t rush you, and leaves you sitting quietly after each episode just absorbing what you experienced. It has been called “masterpiece-level storytelling about memory, mortality, and meaning” — and that description undersells it [web:96]. If you have never watched Mushishi, you have a genuinely extraordinary experience ahead of you.

Watch it if you like: Spirited Away’s atmosphere, Natsume’s Book of Friends, Studio Ghibli films in general.

2. To Your Eternity — A Story That Will Completely Break Your Heart

To Your Eternity

Genre: Drama, Fantasy, Supernatural
Episodes: 20 (Season 1) + Season 2
Where to Watch: Crunchyroll

The premise of To Your Eternity is deceptively simple: an immortal being is dropped onto Earth. It begins as a rock. Then it becomes moss. Then a dying wolf. Then — after encountering a lonely boy in a frozen tundra — it takes the shape of that boy, and begins its eternal journey of discovering what it means to be alive [web:93].

The immortal being — which fans call Fushi — experiences the world entirely through the connections it makes with humans. It learns what joy is. What friendship is. What love is. And, over and over again, what loss is. Because Fushi is immortal, and the people it loves are not. Every person who shapes Fushi leaves it forever, and the show does not soften that. It does not look away from grief. It sits in it, explores it, and ultimately asks whether the capacity for love is worth the inevitable agony of loss [web:93].

To Your Eternity is genuinely difficult to watch at times — not because of anything gratuitous, but because it is one of the few anime that treats grief with the same seriousness and depth that the best literary fiction does. Season 1’s finale is, in our view, one of the most emotionally earned conclusions in anime history. Watch it when you’re ready to feel things deeply.

Watch it if you like: A Silent Voice, March Comes in Like a Lion, anime that make you cry in the best possible way.

1. Anohana: The Flower We Saw That Day — The Anime That Hits Different Every Time

Anohana

Genre: Drama, Slice of Life, Supernatural, Romance
Episodes: 11
Where to Watch: Crunchyroll, Netflix

And at number one — the most underrated, most criminally overlooked emotional masterpiece in our list — is Anohana: The Flower We Saw That Day. This eleven-episode series is not long. It does not have elaborate fight sequences or world-ending stakes. It has six childhood friends, one ghost, one unfulfilled wish, and eleven episodes to break your heart so thoroughly that you’ll still think about it years later.

The story begins with Jinta “Jintan” Yadomi, a shut-in teenage boy who one day starts seeing the ghost of his childhood friend Meiko “Menma” Honma, who died years ago in an accident. Menma can only move on if her last wish is fulfilled — but she doesn’t remember what it is. Bringing the old friend group back together to figure it out forces everyone to confront the grief, guilt, and broken relationships that Menma’s death created [web:91].

What makes Anohana extraordinary is how truthfully it portrays grief. Not the cinematic, beautiful kind of grief you see in most stories — but the messy, complicated, ugly grief that lingers for years, warps friendships, and makes people into versions of themselves they don’t recognise. Every character in Anohana is carrying something. Every character’s pain is completely valid. And the show holds all of it with extraordinary care right until its devastating, cathartic finale [web:91].

The final episode of Anohana is, without exaggeration, one of the most emotionally powerful episodes of television ever made. The kind that makes you sob not just because it’s sad, but because it’s so beautifully, precisely true about how loss and love and time work on real people. In our view, no amount of hype can fully prepare you for it. Just watch it.

“Anohana explores themes of friendship, loss, and healing in a way that very few stories — in any medium — have ever managed to capture.” [web:89]

Watch it if you like: Your Lie in April, A Silent Voice, Clannad — emotionally devastating coming-of-age stories that stay with you forever.

10 Underrated Anime Series — Quick Overview

Frequently Asked Questions — Underrated Anime 2026

Final Thoughts — The Best Anime Are Often the Ones Nobody’s Talking About

The ten anime on this list have something in common beyond being underrated: they were all made by creators who cared deeply about storytelling, took genuine creative risks, and refused to copy whatever was popular at the time. That combination of ambition and craft is exactly what elevates anime from entertainment into something genuinely meaningful.

In 2026, with more anime available than ever before across Crunchyroll, Netflix, Disney+, and countless other platforms, the challenge isn’t finding something to watch — it’s finding something worth watching. These ten series are worth every single minute. Don’t let them stay hidden gems on your watchlist forever.

Which of these underrated anime have you already watched? And which one are you adding to your list right now? Drop your picks in the comments below — and if you have a hidden gem we missed, we want to hear about it! 👇✨