“Anime for adults” is not a genre or an age rating, but a conventional label for series with serious themes: moral choice, war, crime, the price of technology. We don’t list age ratings: they vary by country and service. Below are eight series that have already aired, with facts from Wikipedia pages checked on October 15, 2026. We don’t invent our own scores or ratings: the choice is based on plot and form. We aimed for variety, so the list includes thrillers, a historical drama, a series made of standalone stories and even an animal-world detective show.
Monster
A psychological thriller based on the manga by Naoki Urasawa. Japanese neurosurgeon Kenzo Tenma lives in Düsseldorf, and his life falls apart after he meets a former patient, Johan Liebert. According to Wikipedia, Johan is a sociopathic serial killer who manipulates people and makes them kill. The series was directed by Masayuki Kojima; in Japan it aired on Nippon TV from April 2004 to September 2005. The manga it is based on won the Osamu Tezuka Culture Award and the Shogakukan award.
Standout feature: this is the longest series in the list, with 74 episodes.
Cowboy Bebop
Neo-noir in space that blends science fiction, the Western and noir. The story takes place in 2071, and the main characters are the crew of bounty hunters aboard the ship “Bebop.” The series aired on TV Tokyo and Wowow. It was made by the studio Sunrise under director Shinichirō Watanabe, and the music was written by Yoko Kanno. Wikipedia lists existential boredom, loneliness and the impossibility of escaping the past among its themes.
Standout feature: the series is often called a “gateway” for new anime viewers.
Psycho-Pass
A cyberpunk psychological thriller written by Gen Urobuchi. In the Japan of the future, the Sibyl system runs everything: according to Wikipedia’s description, sensors everywhere constantly read people’s mental states to determine how likely they are to commit a crime. Rookie inspector Akane Tsunemori investigates crimes together with “latent criminals” (Enforcers). The series aired in the Noitamina block on Fuji TV. Wikipedia notes that the plot was influenced by books and films, most of all “Blade Runner” (1982).
Standout feature: after the first season, two more seasons and films followed.
Steins;Gate
A series based on a 2009 visual novel. Eighteen-year-old Rintaro Okabe and his friends accidentally discover a way to send text messages into the past and change the present. Wikipedia names the series’ strengths as character development, themes of time travel and human nature, and its depiction of post-traumatic stress disorder.
Standout feature: there is a sequel, Steins;Gate 0, based on the 2015 novel (premiere in 2018).
Vinland Saga
A historical drama based on the manga by Makoto Yukimura. Thorfinn falls in with Vikings and goes to war after his father is killed by Askeladd. The first season is about a conflict over a new king of the Danes; the second is about slaves on a farm. Wikipedia emphasizes the themes of Viking violence, slavery and pacifism.
Standout feature: Wit Studio made the first season and MAPPA the second, and Shuhei Yabuta stayed on as director.
Pluto
A detective story about robots. The series, which premiered in full on Netflix on October 26, 2023, is based on the manga by Naoki Urasawa and Takashi Nagasaki. The manga, published in eight volumes and winning the Osamu Tezuka Culture Award, reimagines the “The Greatest Robot on Earth” arc from Osamu Tezuka’s Astro Boy as a murder investigation, in which Europol’s robot detective Gesicht looks for the cause of the deaths of robots and humans.
Standout feature: eight compact episodes of 56 to 71 minutes each.
Odd Taxi
A detective story in a world of anthropomorphic animals. Hiroshi Odokawa, a walrus, works as a taxi driver, talks with his passengers and learns about strange events in Tokyo. Conversations draw him into the disappearance of a schoolgirl, and the police and the yakuza start watching him. The series aired from April to June 2021, and the film Odd Taxi: In the Woods came out in 2022.
Standout feature: a short season that’s easy to watch over a few evenings.
Mushishi
An episodic anthology based on the manga by Yuki Urushibara. According to Wikipedia, it has no overarching storyline; the only things the episodes share are Ginko and the mushi. Ginko solves problems caused by these supernatural creatures. The manga ran in Kodansha magazines from 1999 to 2008 and made up ten volumes. The series was directed by Hiroshi Nagahama and aired on Fuji TV from October 2005 to June 2006. The second series, Mushishi: Next Passage, came out in 2014 and has 20 episodes.
Standout feature: the episodes are linked only by the main character and the mushi.
How to Choose by Mood
| What you’re in the mood for | What to watch | Length |
|---|---|---|
| A psychological thriller about choice and guilt | Monster | 74 episodes |
| Space noir | Cowboy Bebop | 26 episodes |
| A dystopia about social control | Psycho-Pass | 22 episodes of the first season |
| Time travel | Steins;Gate | 24 episodes |
| War, slavery and the question of violence | Vinland Saga | 48 episodes across two seasons |
| An investigation involving robots | Pluto | 8 episodes |
| A detective story in an animal world | Odd Taxi | 13 episodes |
| Standalone supernatural stories with no overarching plot | Mushishi | 26 episodes |
Tip. If you have little free time, start with compact series: Pluto (8 episodes) or Odd Taxi (13). For a longer binge, Cowboy Bebop and Mushishi, with 26 episodes each, will do, and Monster is best saved for long evenings.
Frequently Asked Questions
Where should I start if I haven’t watched much anime?
Wikipedia calls Cowboy Bebop a “gateway” series that helped Western viewers discover anime. If you’d like something shorter, try Pluto or Odd Taxi.
Do I need to know the source material?
No. Monster, Mushishi, Vinland Saga and Pluto are adaptations of manga, Steins;Gate is based on a visual novel, and Cowboy Bebop, Psycho-Pass and Odd Taxi were created by studios for the screen. Source material is useful only if you want to compare.
Do these series have sequels?
Yes, some of them. Psycho-Pass has a second and a third season and films, Steins;Gate has the sequel Steins;Gate 0, Mushishi has a second series from 2014, Odd Taxi has a 2022 film, and Vinland Saga has two seasons.
Where can I watch these series?
Streaming catalogs change, so we don’t list where to watch. Check the page of the series you want on a service available to you.
Sources
- Monster (Wikipedia)
- Psycho-Pass (Wikipedia)
- Steins;Gate (Wikipedia)
- Vinland Saga (Wikipedia)
- Pluto (Wikipedia)
Data was checked against Wikipedia on October 15, 2026.
Discussion