Berserk A fantastic story that often leads the conversation when it comes to dark fantasy anime series. Written and illustrated by Kentaro Miura, Berserk is an unprecedented story that has continued for decades and is still unfinished in 2026. It has earned worldwide acclaim, thanks to its characters and storytelling. The Berserk story is one of the most gruesome and dark in mainstream anime, and while it is a masterpiece in many ways, there are other anime series that can easily rival it.
The 31 Best Seinen Anime of All Time, Ranked
From Berserk to Kaguya-sama, the best seinen anime cover many genres and themes, whether it's action, comedy, romance, or thriller.
Attack on Titan
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Main Character: Eren Yager
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Genre: Shonen
Attack on Titan is a fantastic shonen manga, aimed more at a younger audience. However, despite that, it's still a dark series. Attack on Titan The story follows Eren Yeager in a world ravaged by the Titans, man-eating creatures. While Irene and her family were living peacefully, after the fall of the Wall, everything changed.
Attack on Titan Shows horror scenes involving the Titans, but also darker political issues, especially near the end. Attack on Titan has definitely been an iconic series over the years, and it's undeniable that in terms of writing and storytelling, it can easily rival Berserk. Regardless, both Eren and Guts have been cited as the best written main characters in anime.
Tokyo Ghoul
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Main Character: Ken Kaneki
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Genre: Sennen
Like the Berserk story, Tokyo Ghoul It falls under the seinen category, which targets an older male audience. With that said, this is expected to be a deeper series for Tokyo Ghoul, exploring more mature themes across the board. Tokyo Ghoul has become an icon in the anime world as one of the most popular seinen series of all time, and can even rival Berserk in popularity.
Tokyo Ghoul by Sui Ishida follows the story of Ken Kaneki where ghouls, man-eating creatures exist. The anime for Tokyo Ghoul was a mess after the first season, but its manga remains a formidable rival to the Berserk series in terms of writing and storytelling. In many ways, Tokyo Ghoul is even darker than Berserk, with countless character deaths, and terrifying scenarios throughout the series. With dark secrets and gut-wrenching developments, this series will keep fans on the edge of their seats from start to finish. The manga for Tokyo Ghoul is more intense and takes the gruesome nature of the story to a whole other level.
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The Vinland Saga
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Main Character: Thorfinn
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Genre: Sennen
The Vinland Saga It is definitely a series that exceeds the expectations of the audience. Thorfinn, the main character, loses his father and goes down a very dark path at the beginning of the story. However, at the end of the first season and following in the second season, he undergoes a very dramatic transformation, turning into a pacifist.
While The Vinland Saga Not quite a horror series like Berserk and not founded in fantasy, it's still a series that more than rivals it in the dark anime genre, and does things better. After all, when talking about the greatest seinen series of all time, Berserk and Vinland Saga are the two most often cited stories. Unlike Berserk, Vinland Saga is actually a stunning anime adaptation and fans can't wait for the third season to air.
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Gender-bender anime has been around for a long time, spanning many genres. These great shows make the most of the trope.
monster
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Main Character: Tenma
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Genre: Sennen
monster is a series by the legendary Naoki Urasawa, a creator with many iconic stories. Demon is his biggest hit and the reason is quite obvious. Monster is a dark thriller following Kenzo Tenma, a Japanese doctor living in Germany, who risks his career to save a young boy instead of his prestigious patient.
While Tenma's actions are honorable, this incident goes on to change his life for the worse. The child he saves turns out to be a serial killer and a lot of the blame is put on him. On the run from the police and trying to find the man he saved so long ago, it's the start of the most exciting series yet.
Monster is one of the most legendary anime out there and it's even better than Berserk. Its anime adaptation remains one of the most iconic stories of all time.
perfect blue
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Main Character: Mina
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Genre: Psychological Thriller Movie
perfect blue One of the most legendary anime movies of all time. It was released in 1997, created by Yoshikazu Takeuchi. The story of Perfect Blue follows Mima, a former pop idol member who wants to turn her career around and become an actress. What she thought was a great new beginning for her turned into a nightmare. The public's reaction to her shift and the terrifying stalker who follows her around make for one of the most memorable dark thriller films. The plot of Perfect Blue has certainly disturbed many, and it is definitely a story that could rival Berserk, although its plot is, of course, much shorter, being a movie.
Death note
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Main Character: Prakash Yagami
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Genre: Shonen
Death note Aired all the way back in 2006. Despite this, it remains one of the most popular anime series even in 2026. When it comes to mystery and thriller series with dark twists, there aren't many series that have the depth of Death Note. The characters of Light and El have become icons and most recognizable characters of all time on a level with the likes of Guts or Griffiths.
The first part of Death Note, at least, is certainly comparable to Berserk, if not much better. Although its second half dips in quality, Death Note certainly explores darker themes incredibly well, although it's not as gruesome as the likes of Berserk. Even though it's been years since its debut, Death Note is only growing in popularity and will continue to hold its place as one of the most iconic stories of all time.
Claymore
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Main Character: Claire
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Genre: Shonen
When it comes to a series like Berserk, there is probably no other story quite like it Claymore. Like Berserk, Claymore is set in a fantasy medieval world. The world of Claymore is filled with parasitic creatures known as Yoma. These yoma are known as shape-shifting monsters that infect the human body and feed on their hosts. To fight these Yoma, a hybrid between a human and a Yoma was created.
These became known as Claymores, a class of female warriors who took their name from the large swords they carried around. the story of Claymore Focuses in particular on Claire, a claymore warrior who stands as one of the most iconic protagonists of Dark Shonen.
