Collection
Longest Anime Series
20 titles · 1986–2017
For when you want a show that never ends. Long-running anime with hundreds of episodes — One Piece is past 1,100 and Detective Conan past 1,200. Every episode has its own page, and the filler episodes are marked so you can skip them.
Surprise meOne Piece
1999– · Action, Adventure · 28 seasons
★ 8.8ONE PIECE
Years ago, the fearsome Pirate King, Gol D. Roger was executed leaving a huge pile of treasure and the famous "One Piece" behind. Whoever claims the "One Piece" will be named the new King of the Pirates.
Detective Conan
1996– · Crime, Mystery · 31 seasons
On air★ 8.0名探偵コナン
The son of a world famous mystery writer, Jimmy Kudo, has achieved his own notoriety by assisting the local police as a student detective. He has always been able to solve the most difficult of criminal cases using his wits and power of reason.
Pokémon
1997–2023 · Action, Adventure · 25 seasons
★ 8.0ポケットモンスター
Join Ash accompanied by his partner Pikachu, as he travels through many regions, meets new friends and faces new challenges on his quest to become a Pokémon Master.
Naruto Shippūden
2007–2017 · Action, Adventure · 11 seasons
★ 8.5NARUTO -ナルト- 疾風伝
After 2 and a half years Naruto finally returns to his village of Konoha, and sets about putting his ambitions to work. It will not be easy though as he has amassed a few more dangerous enemies, in the likes of the shinobi organization; Akatsuki.
Bleach
2004–2012 · Action, Fantasy · 9 seasons
On air★ 8.4BLEACH
For as long as he can remember, Ichigo Kurosaki has been able to see ghosts. But when he meets Rukia, a Soul Reaper who battles evil spirits known as Hollows, he finds his life is changed forever. Now, with a newfound wealth of spiritual energy, Ichigo discovers his true calling: to protect the living and the dead…
Gintama
2006–2018 · Action, Comedy · 10 seasons
★ 8.2銀魂
In a world where aliens have invaded Edo Period Japan, skyscrapers, trains and motor bikes have replaced the simple life of Earth inhabitants. One man however, still carries the soul of a samurai, Gintoki Sakata, otherwise known as Yorozuya Gin-san. As reckless as he is, Gintoki carries his own resolve and is ready…
Fairy Tail
2009–2019 · Action, Adventure · 8 seasons
★ 7.9フェアリーテイル
Lucy is a 17-year-old girl, who wants to be a full-fledged mage. One day when visiting Harujion Town, she meets Natsu, a young man who gets sick easily by any type of transportation. But Natsu isn't just any ordinary kid, he's a member of one of the world's most infamous mage guilds: Fairy Tail.
Dragon Ball Z
1989–1996 · Action, Adventure · 9 seasons
★ 8.4ドラゴンボールZ
Now happily married and with a son, martial arts champion Goku must defend Earth from a series of extraterrestrial invaders bent on destruction.
Boruto: Naruto Next Generations
2017–2023 · Action, Adventure · 7 seasons
★ 7.8BORUTO-ボルト- -NARUTO NEXT GENERATIONS-
The life of the shinobi is beginning to change. Boruto Uzumaki, son of Seventh Hokage Naruto Uzumaki, has enrolled in the Ninja Academy to learn the ways of the ninja. Now, as a series of mysterious events unfolds, Boruto’s story is about to begin!
Black Clover
2017–2021 · Action, Fantasy · 2 seasons
On air★ 8.5ブラッククローバー
Asta and Yuno are two orphans who want the same thing: to become the Wizard King. Locked in a friendly rivalry, they work hard towards their goal. While Yuno excels at magic, Asta has a problem uncommon in this world: he has no powers! But, on the day they receive their grimoires, they surprise everyone. To reach…
InuYasha
2000–2004 · Action, Adventure · 7 seasons
★ 8.6犬夜叉
Kagome Higurashi is a modern day young girl who lives with her family by the old Higure shrine. Unbeknownst to Kagome, she is the reincarnation of priestess Kikyo and posseses the "Jewel of Four Souls" (the Shikon jewel). One ill-fated day, Kagome locates an ancient well near her home and is abruptly transported…
Yu-Gi-Oh! Duel Monsters
2000–2004 · Action, Adventure · 5 seasons
★ 8.3遊☆戯☆王デュエルモンスターズ
Bullies often target someone frail and weak—someone exactly like Yûgi Muto. He treasures his Millennium Puzzle, an ancient Egyptian artifact that was brought into his grandfather's game shop. Believing that solving the puzzle will grant him his wish, he completes the puzzle, unleashing a new personality within him,…
Hunter x Hunter
2011–2014 · Action, Adventure · 1 season
★ 8.7HUNTER×HUNTER
Gon, a young boy who lives on Whale Island, dreams of becoming a Hunter like his father, who left when Gon was still young.
Kingdom
2012– · Fantasy · 6 seasons
★ 7.6キングダム
In the Warring States period, young orphan Xin vows to aid King Zheng of Qin in his quest to unify China by becoming a general himself.
Ace of the Diamond
2013–2016 · Drama, Sports · 4 seasons
On air★ 7.9ダイヤのA
Scouted for his potential, brash left-handed pitcher Eijun Sawamura joins baseball powerhouse Seido High to become the undisputed ace of the team.
REBORN!
2006–2010 · Action, Adventure · 9 seasons
★ 8.2家庭教師ヒットマンREBORN!
Tsuna, a timid junior high student, is a failure at school, sports, and social life. But everything around Tsuna has been completely changed when a baby called Reborn, who claims to be an Italian hit man from Vongola family shows up! Reborn was sent to groom Tsuna for his future life as a mafia boss of the family!
Hajime no Ippo
2000–2002 · Action, Comedy · 3 seasons
★ 8.7はじめの一歩
Makunouchi Ippo is an ordinary high school student in Japan. Since he spends most of his time away from school helping his mother run the family business, he doesn't get to enjoy his younger years like most teenagers. Always a target for bullying at school (the family fishing business grants him a distinct odor),…
JoJo's Bizarre Adventure
2012–2022 · Action, Adventure · 5 seasons
On air★ 8.5ジョジョの奇妙な冒険
Follow the intergenerational feud between the Joestar Family and various forces of evil, the most prominent of which is Dio Brando and his followers.
Naruto
2002–2007 · Action, Adventure · 6 seasons
★ 8.4NARUTO -ナルト-
Naruto Uzumaki, a mischievous adolescent ninja, struggles as he searches for recognition and dreams of becoming the Hokage, the village's leader and strongest ninja.
Dragon Ball
1986–1989 · Action, Adventure · 5 seasons
★ 8.3ドラゴンボール
Young Goku sets off on a quest with his teenage friend Bulma to find the seven Dragon Balls, which grant whoever possesses them a single wish.
Longest Anime Series — watch online free in HD on our site: every title has a free page with the official trailer and the player, and every series a page for each episode, no sign-up needed. In the list: One Piece, Detective Conan, Pokémon, Naruto Shippūden, Bleach, Gintama, Fairy Tail, Dragon Ball Z. Sort by year or rating, or press “Surprise me” to pick at random.
Questions & answers
How many anime are in “Longest Anime Series”?
20 titles, from 1986 to 2017: One Piece (1999), Detective Conan (1996), Pokémon (1997), Naruto Shippūden (2007), Bleach (2004), Gintama (2006), Fairy Tail (2009), Dragon Ball Z (1989), Boruto: Naruto Next Generations (2017), Black Clover (2017), InuYasha (2000), Yu-Gi-Oh! Duel Monsters (2000)….
Where can I watch Longest Anime Series online?
Every title in the collection has its own page with the official trailer and a player; series also have a page for every episode. Open a title and press play — or start with the trailer.
Can I watch “Longest Anime Series” for free?
Yes, every page in the collection is free and needs no sign-up: the official trailer in HD, the plot, the voice cast and the player. What plays in the player depends on the title and your country.
