The Seinen and Shonen shows are the most popular anime categories, comprising the top drawer series in the anime universe. While the former focuses on attracting young male audiences, the latter keeps its sharp focus on creating content that appeals to the hearts of young adult males from around eighteen to forty or forty-five years of age. Keeping the show in a Seinen category, the anime mostly deals with more mature subjects rather than adventures and superpowers, which tug at the heartstrings of the young generation.
Adult anime fans will want to experience a more intense story where the viewer must be prepared for all kinds of ups and downs. To be fair, the subject matter of the Seinen anime may be too much for young viewers to digest.
10/10 Bungo stray dogs
If espionage shows grab your attention, then Bungo Stray Dogs is definitely your kind of anime. It may take you a few episodes to fall in love with the series, but the story keeps getting better and better with each episode. The humorous scenes in between will make you chuckle at times, but then it turns serious again, keeping you on edge.
Atsushi Nakajima is kicked out of the orphanage and has nowhere to live. While spending time on the riverbank, he saves a man named Osamu Dazai from dying, and the latter turns out to be a supernatural detective. Osamu solves a case related to the tiger that has appeared in the area recently. Atsushi joins their detective firm to become a supernatural investigator himself.
9/10 Mars enters like a lion
This series is a true example of the saying, “maturity comes with experience, not age.” Unlike other entries on the list, this one may not be the most popular, but its mature subject matter definitely makes it worth watching for Seinen viewers. The story of the anime will take you on an emotional ride with the hope of seeing the protagonist get out of his misery.
Rei Kiriyama, a professional shogi player, is the protagonist of the series, who loses his parents and sister in an unfortunate accident, after which he starts living with the family of his father’s friend. But soon Rei leaves their house, seeing herself as a burden to the family, and begins living alone. Throughout the journey, he meets several people who help him overcome the financial crisis and depression.
8/10 Hellsing Ultimate
Vampires have always been a part of the mature content, bringing everything to the screen that Seinen viewers would love. Hellsing Ultimate is no different from other creepy vampire stuff you’ve seen so far. In fact, the protagonist of the series, Alucard, is far superior to any other vampire you’ve ever seen, revealing the true strength of these supernatural beings.
Alucard is a vampire from the Hellsing organization, loyal to Sir Integra Fairbrook Wingate’s Hellsing. He is the organization’s greatest weapon, helping them fight those they consider a threat to the organization or England. Alucard doesn’t flinch, even before killing his own kind, and likes to give them the most painful deaths.
7/10 Parasite: The Maxim
Shows that present the invasion of other species with the motive of taking over the earth have the most messed up depiction of the human world. Horrible monsters that gain control over humans, body horror, bloodshed and lots of action, there’s a lot to experience in Parasyte: The Maxim.
The alien species known as Parasytes can take over humans by targeting their brains. But Shinichi Izumi is a rare case because the parasite he calls Migi was unable to target his brain and instead now has control over his right hand. Using Migi as a weapon, Shinichi now fights other parasites to save humanity from these monsters.
6/10 Made in the abyss
At first, Made in Abyss might look like a show for teenagers, but it’s quite the opposite. It’s one of the few anime that fits the Seinen category perfectly. The show’s spectacular setup maintains consistency to the very end. The second season of Made in Abyss recently aired and fans are hoping to get the third season soon.
Riko is a young girl who lives in the city of Orth, which is built near a giant abyss. Those who leave to explore the abyss never return, and Riko’s mother is one of them. One day, she finds a robot that has come from the Abyss, which motivates her to explore the secrets of the mysterious place, thus starting her journey to the Abyss.
If you love fast-paced shows in the mystery and science fiction genre, go for Erased without a second thought. Do you ever wonder what you would do if you were somehow given the opportunity to go back in time to correct some of the mishaps in your life? Well, the protagonist of Erased, Satoru Fujinuma, gets this opportunity.
Satoru Fujinuma receives the mysterious power known as “Revival” that sends him 18 years back in time, the moment before the unfortunate event that took the life of his mother. Now he wants to use this opportunity to prevent this incident and also another incident that killed his childhood friends.
4/10 Ghost In The Shell: Stand Alone Complex
Ghost in the Shell is the biggest name in the cyberpunk genre, and while there are several movies and TV shows in the franchise, Ghost in the Shell: SAC ranks highest among them all. Also, if stories with complex mysteries and suspense thrill you, then this is the best Seinen anime for you.
The world has advanced to the state where the complete body transformation from flesh to machine is possible, giving incredible strength and power to humans. The same transformation can be used by criminals to commit heinous crimes. To stop these sophisticated criminals, a new department known as Section 9 was created by the government.
Berserk is one of the most legendary sword and sorcery anime. The animation of the series may not be impressive, but the overall theme of the series, character development and story will leave you speechless. You can well imagine the greatness of the show by the fact that great anime shows such as Black Clover, Goblin Slayer, Castlevania, Blue Exorcist, Fullmetal Alchemist, Claymore, Re:Zero and many others are inspired by the series.
Guts is a skilled swordsman who takes the mercenary job. He never stays long in one group before joining The Band of the Hawks, led by Giffith, a legendary fighter. But the great bond of friendship changes to the greatest rivalry in lust for more power.
It’s hard to find an anime as cleverly written as Monster. The author has left it to the viewers to judge what is right and what is wrong, and what is the final conclusion of the story. Likewise, the series’ main antagonist remains a mystery until the very end. There is simply nothing about Monster that Seinen viewers will not like.
The show is set in Germany, where the country’s best neurosurgeon, Dr. Kenzo Tenma, saves a young boy and his little sister from dying one day. Many years later, the same boy enters Tenma’s life again, and this time, as a killer with unknown motives. The cat and mouse hunt opens several mysteries about Johan Liebert and his younger sister Anna.
1/10 Vinland Saga
Topping the list obviously means that Vinland Saga is the greatest Seinen anime of all time, but what makes it so legendary is that the main theme of the show is based on the true events of 11th century England. It is the perfect blend of fiction and true events. Historical shows have to take special care in the art style and facts they present while being true to the subject of the story, and Vinland Saga has done that flawlessly.
Vinland Saga is the story of young Thorfinn, the son of the greatest Viking warrior. But after his father dies in battle at the hands of Askeladd, a mercenary leader, Thorfinn vows revenge, but later finds himself in the war for England’s crown.
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