7 most disappointing anime of 2026 so far, ranked

With every new season, there will always be anime that rise to the top and become instant classics and those that stumble and fail to deliver. What makes a bad anime even more disappointing is when a promising series fails to meet the expectations after months of hype. Even with a dedicated manga fan base and animation studio prestige, the only thing that can guarantee an anime's success is its quality.

Now halfway into 2026, the cream of the anime crop has begun to show long-lasting success, and the biggest disappointments of the year have become apparent. Whether it be a lack of faithfulness to the source material, meandering plots that don't go anywhere exciting, or distracting animation and art style choices, not every 2026 anime series can be called a masterpiece.

Rent-a-Girlfriend Season 5 Was a Predictable Snoozefest

Anyone still holding out hope that Rent-a-Girlfriend was going to magically become worth watching in its fifth season was sorely mistaken. The same criticisms that have always plagued the harem anime are still applicable to the new season, including repetitive story arcs, infuriating miscommunication, and a distinct lack of character development that makes Kazuya the same pathetic loser he was in season one.

Season five of Rent-a-Girlfriend saw the continuation of the 'Hawaii' arc, where it continues to impressively hold off on any kind of emotional climax between Chizuru and Kazuya, or even Mami and Kazuya. While certainly disappointing, it can't be called the biggest disappointment of 2026, as every fan saw this coming from a mile away. With season six officially in production, there's nothing left to do but laugh.

Dark Moon: The Blood Altar Gave More Teen Romance Than Vampire Drama

At first glance, Dark Moon: The Blood Altar promised a dark, moody story about the dangerous world of vampires. What transpired was a relatively safe high school reverse harem that co-opted the aesthetic of vampirism with none of the bite. Fans of the K-pop boy band ENHYPEN will certainly get a kick out of seeing the members reimagined as vampire students with supernatural powers, but that novelty is where the anime's intrigue ends.

Protagonist Sooha felt like a compelling heroine at first, but it quickly became apparent that she was nothing more than a self-insert for ENHYPEN fans, who acts as a straight man to the boys. Furthermore, Dark Moon: The Blood Altar does not make use of its intended genre as vampirism has little effect on the narrative, which would disappoint any potential fan hoping for more darkness and danger.

Dead Account Was Dead on Arrival

Dead Account had all the makings of a stand-out anime, with a unique premise of evil spirits that haunt dead online accounts, causing the rise of digital exorcists. The protagonist, Soji Enishiro, makes a living by posting rage bait videos online to pay his sister's hospital bills, but instead of being a commentary on today's digital landscape, Dead Account quickly backslides into predictable shonen slop.

Shoji's personality as an online troll makes him immediately unlikable, and any attempts to show his true, kind and selfless side fall flat. Every fight between him and an evil spirit as he attempts to get revenge for his sister's death is slow and boring, not helped by the anime's low budget for animation. Among every other battle shonen in 2026, Dead Account failed to make any significant waves.

Needy Girl Overdose Tried to be High-Concept, But Was Just Confusing

In the highly anticipated adaptation of the Needy Girl Overdose video game, fans expected to see the pastel-colored world of OMGKawaiiAngel brought to life. Fans did receive some truly innovative stylistic choices, such as live action and stop-motion segments, but nothing could hide the lack of substance in this supposedly deep, psychological exploration of modern society and the world of streaming.

OMGKawaiiAngel surprisingly takes a backseat as an omnipotent being watching over several new characters, which is already a hard sell for die-hard fans of the Needy Girl Overdose game. Every episode consists of these characters complaining about their lives over monotonous montage footage, which reads more as a poorly constructed lecture than biting social commentary.

Hana-Kimi Failed to Deliver on 30 Years Worth of Hype

Alongside Ouran High School Host Club and Skip Beat!, Hana-Kimi was one of the most popular shojo manga series of the '90s and early 2000s. However, 30 years worth of anticipation for its anime adaptation led to high expectations, which the series unfortunately failed to meet. Condensing the beloved series into 12 episodes inevitably made its plot feel rushed and unfaithful to the source material.

The central love triangle, consisting of protagonist Mizuki Ashiya and male love interests Izumi Sano and Shuichi Nakatsu, ended up feeling forced thanks to Hana-Kimi neglecting to flesh out each character's motivations. Coupled with CGI background animation that was utterly at odds with the manga's '90s charm, fans were severely disappointed in studio Signal.MD's lackluster efforts.

Liar Game Was Badly Paced and Visually Boring

Studio Madhouse is the home of some of the greatest psychological anime ever, including mastperieces like Death Note, Monster and One Outs. That's what makes Liar Game's anime adaptation even more disappointing for fans who've waited so long to see it on-screen. Even though the anime is only halfway through its first season, breakneck pacing and full episodes dedicated to exposition kill any tension this thriller should have had.

Liar Game is still a compelling story underneath its mishaps, but it can't even rely on visual style to carry it through. The same studio that delivered Death Note's dark and brooding atmosphere should've had no trouble adapting the shadowy style of Liar Game's manga covers. Instead, each character appears flat, the setting is inexplicably brightly colored, and the J-pop soundtrack is at complete odds with the anime's nail-biting plot twists.

That Time I Got Reincarnated as a Slime Season 4 Stalled Rimuru's Development

What was once heralded as a good isekai in a sea of slop is now struggling to balance its massive ambitions with engaging storytelling. The animation in season four of That Time I Got Reincarnated as a Slime remains polished; the worldbuilding is still impressive compared to its genre-mates; but the pacing has slowed to a painful trudge as political discussion takes precedent over meaningful action.

Rimuru Tempest, once an exciting protagonist, has fallen into the common isekai trap of gaining too much power too quickly. He rarely faces genuine challenges, making every victory feel predictable. Season four's big bad, Mariabell, is set up as a genuine threat to Rimuru, but any drama is decimated when her plans are easily thwarted. For a series known for blending strategy, humor, and spectacle, That Time I Got Reincarnated as a Slime is starting to feel repetitive and overly cautious.