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Milestone Celebration / Anime & Manga

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  • For the 30th anniversary (2008) of both Rumiko Takahashi's first published short story (Katte na Yatsura) and the manga version of Urusei Yatsura, three new OVA episodes (one for each of Urusei Yatsura, Ranma ½, and InuYasha) were made, along with an animated short crossover of those three series. (The Inu Yasha OVA episode, which covered the Black Tessaiga arc, was later reused as part of the second TV series.) These were initially shown during that year at a gallery show, called "It's a Rumic World", which also featured manga manuscript pages and other illustrators' drawings of Takahashi's characters on display.
  • Shonen Jump:
    • The first Famicom Jump game, Heroes Retsuden, was made for the magazine's 20th anniversary. J-Stars Victory VS was later made for the 45th festivities, and Jump Force was made for their 50th.
    • To celebrate Shonen Jump's 40th anniversary, there was a special anime tour moving through ten cities in Japan, showing anime movies that had been made just for the occasion. This included a new Dragon Ball special, which concluded its anime run eleven years before that benchmark, making it a bit of a milestone celebration for Dragon Ball as well.
    • For their 50th anniversary, they held a year-long exhibition about the history of the magazine in three parts: One about the 50s-70s era, a second on the 80s-90s era, and a third about the 2000s and beyond. The magzines themselves got a bit of a spinal makeover, with each book carrying a spine design from a different year of Jump publication. They also released the smartphone game Ore Collection centered around all of their hit series.
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  • For their 15th anniversary, CLAMP released a twelve volume book entitled Clamp no Kiseki which contains summaries of featured series, interviews with Clamp and friends of Clamp, artwork, and exclusive new short comics. It also contains limited edition chess pieces featuring the characters from various Clamp works.
  • On April 10, 2014, for the tenth anniversary of A Certain Magical Index and his debut as a writer, Kazuma Kamachi made ten announcements about his various works, including a Massive Multiplayer Crossover between his novels.
  • Aquarion Logos was made to celebrate the series' 10th anniversary.
  • For Azumanga Daioh's tenth anniversary, the manga was re-released with updated artwork and new chapters.
  • Diebuster was made to commemorate Studio Gainax's 20th anniversary.
  • Digimon had a sequel series to Digimon Adventure announced on August 1, 2014, 15 years to the day the seven main characters were brought to the Digital World.
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  • Dragon Ball Kai was released in Japan in 2009 to celebrate the 20th Anniversary of Dragon Ball Z. Five years later in 2014, after the series had previously been cancelled in 2011 with one arc left to be redone, it was brought back to do the final arc, just in time for its 25th Anniversary. That same year, Americans got to join in on the celebration: not only was it announced that Kai would now be airing uncut on Toonami, but Funimation announced that they were giving the Battle of Gods film an English dub and giving it a limited run in theaters.
  • GeGeGe no Kitarō premiered its usual decade-wise anime adaptation (the sixth) in 2018 to celebrate the 50th anniversary of the first anime adaptaion airing (which was in 1968).
  • The Gundam franchise has had several over the course of its long life:
  • Inuyasha did a special retrospective type episode for its 100th. All the characters got stuck in demon moth cocoons and thinking about how InuYasha always helped them out while InuYasha was trying to rescue them.
  • Macross:
  • Naruto:
    • The manga celebrated its ninth anniversary with a page showing Gaara and Naruto posing with a certain group of seven other people.
    • They did this yet again for its tenth anniversary in chapter 434 with a cover of Naruto clones working on a puppet of his newly-acquired Sage-Mage enhanced Rasenshuriken technique.:[1]
    • The anime had an omake for the 349th episode about the characters celebrating the 350th episode...which the title character himself wasn't invited to because he was not in it (the whole episode was about Sasuke and Itachi), and then noting that before this he was absent for the 100th episode (which was about Might Guy, Rock Lee, and Tsunade) and the 300th (the episode of the fight against Hidan and Kakuzu right before he showed up). Which is funny, because most of the characters who were invited there weren't in that episode either.
  • Ojarumaru celebrated its 15th anniversary in 2012 by having a 3rd special air on March 20. A character event was hosted at the NHK Studio Park Event Hall from August 21 to September 17. Episode 1334 had a Shout-Out to Nintama Rantarou. In addition, NHK E-Tele aired the top 10 episodes of Ojarumaru in a different attire note  from December 24, 2012 to January 10, 2013.
  • One Piece:
    • One Piece Film: Strong World, the 10th movie corresponding to the series' 10th year anniversary, was penned by Eiichiro Oda himself; as confirmed by Word of God, this means that this is part of the manga's canon. However, this is largely averted in the One Piece anime itself. No milestones in the series are particularly heralded as special events, and significant events only happen on episodes 250 (end of Franky's origin flashback), 300 (Zoro's defeat of CP9's Kaku) and 400 (Silvers Rayleigh talking about Gold Roger).
    • The 100th chapter marks the end of the East Blue Saga, and thus, the beginning of the crew's Grand Line journey, complete with an in-universe launching ceremony at the end of the chapter. (In the anime, this was episode 53, so not much of a milestone.) In fact, Oda actually cut out a couple of planned sidestory chapters from the manga (which made it into the anime) in order to specifically invoke this.
    • The 800th chapter marked the founding of the Straw Hat Grand Fleet.
    • For the 20th anniversary, a TV special retelling the East Blue Saga with new animation, aptly titled One Piece: Episode of East Blue, and a three-issue magazine (One Piece Magazine) serializing a novel about Ace were released. Also, a callback in form of the cover of the first Shonen Jump issue in which One Piece started was shown in the 33rd issue of 2017, as well as some one-shots and other minor 'projects' in said issue. Also, One Piece: World Seeker was released in March 2019 to coincide with the anniversary of the anime, featuring the talents of several producers and supervisors of many aspects of the franchise. Also, a live-action TV series was announced, with Eiichiro Oda himself as one of the executive producers. And that's without mentioning the special promotions made by the One Piece Tower, three of the smartphone games and collabs with Japanese apps.
    • The 900th chapter ended on a cliffhanger where the Thousand Sunny was seemingly destroyed, with the following chapter revealing that Jimbei's old crew, the Sun Pirates, had intervened at the last moment — with the tiger blowfish fishman Wadatsumi hiding the Sunny and the Straw Hats in his mouth while the Sun Pirates had their own ship take the hit. They were that supportive of their former captain joining the Straw Hats.
  • Osomatsu-san is for Akatsuka Fujio's 80th birthday. Instead of embracing its 60s look wholeheartedly, it instead uses it for comedic effect with its parodies. Also getting in on the anniversary fun is a sequel series to Tensai Bakabon (titled Shonen Bakabon, centered around Bakabon learning how to be properly stupid again after getting brainy), and an alternate take on Himitsu no Akko-chan written by the Kamikita Twins.
  • Pokémon:
    • The special episode Pokémon: The Mastermind of Mirage Pokémon was made in part to celebrate 10 years since the franchise launched with the Pokémon Red and Blue Game Boy games in Japan in 1996. The kicker, it aired in the U.S. (with new voice actors) first, where the fans there only had Pokémon since 1998.
    • Another, more subtle way to celebrate an anniversary in the anime is Spurt!, the 10th Opening Theme. It shows all the Pokemon that Ash has ever obtained in the series, but most of them never showed up in the corresponding season.
    • The Anime has also been none too shy with "hundred" episodes. (This list includes episodes with numbers X99 and X00 by Bulbapedia reckoning because said reckoning excludes two Lost Episodes aired out-of-order but includes the Banned Porygon Episode.)
      • 399: The group arrives for the Evergrande Conference; 400: The Tournament starts
      • 499: A cosplay episode wherein Brock wins a Happiny Egg
      • 597-8: Ash vs Paul 1st time (599 has Ash's recovery as well as Brock's meeting with Uxie)
      • 699: Iris' victory in the first Club Battle Tourney OR 700: The beginning of the Heel Face Meowth arc.
      • 800: The start of the X & Y saga (Conversely, 799 ends the "Best Wishes" saga.)
      • 900: Team Flare's second appearance, and Zygarde Core temporarily transforms into 10% forme
      • 1,000: Lillie recovers her lost memories and becomes able to touch all Pokemon again. Gladion's Type: Null also evolves into Silvally. This episode was actually promoted as episode 1,000 in Japan, which meant some of the special episodes were counted in.
    • The 120th episodes of both the "Advanced" and "Diamond & Pearl" sagasnote  were Clip Shows of the respective sagas to date. The latter was also the last one made in Standard Definition.
    • The twentieth movie, instead of being about Ash and his friends in Alola, will instead be a re-imagining of the first season and will feature Ash, Pikachu and Ho-oh. However, it deviates from the the first episode greatly by having new characters with Generation 4 favorites like Piplup and Lucario, and even Generation 7 monsters like Incineroar and even Marshadow. It takes place in an Alternate Universe from the original Kanto arc.
    • Sun and Moon also had a subtle celebration in episode 20, premiering in Japan fairly close to the 20th anniversary of the anime and was a Bottle Episode just featuring Ash and Pikachu. A nod to the very first episode was also made with the duo having a brief encounter with another Legendary Pokemon (in this case, Tapu Lele).
    • Episode 42 of Sun and Moon celebrated the 20th anniversary of the anime by flying the class to Kanto on a field trip. This included bringing back Misty and Brock in their original Kanto designs and Team Rocket doing their original motto (complete with James' rose). It also featured a lot of Kanto Pokemon. Even Jigglypuff reappeared.
  • Pretty Cure:
  • PriPara:
    • The anime has the episode "Tension 100% Max!", which is about Dorothy West being stuck inside the Rosette Pact and getting her Super Cyalume Coord. The episode also has the number "100" and puns involving the number placed throughout the episode as part of a contest. If a viewer was able to name all the instances in which the number 100 was mentioned, they would be entered for a chance to win a golden version of the Cyalume Jewel Mic toy. 5 second prize winners won merchandise from Prism Stone Shop, and 50 third-prize winners won a CD of the then-current ending theme, "PriPara Dancing!".
    • There was also the "Laala's First Anniversary" campaign, which celebrated the one year anniversary of the franchise, as well as the fifth anniversary of the Pretty Rhythm franchise. Special clothing items were given out in the game, a mall tour came to Japanese malls in the summer of 2015 and a special cake was made by AniSugar. The same thing was done for the second anniversary of the franchise (which also celebrated 5 years of Pretty Rhythm TV shows), except three more events were added: new items were sold at Prism Stone, two new idol units were announced, and the Kami Skirt tournament started the same day.
  • Ranpo Kitan: Game of Laplace is for the 50th anniversary since Edogawa Rampo's passing, and updates itself in most of its aspects to appeal to modern viewers.
  • Sailor Moon ended with episode 200. A Continuity Reboot anime, Sailor Moon Crystal, was announced on the franchise's 20th anniversary. Some of The Merch for Crystal also bears the 20th anniversary logo, despite being released two years later.
  • Slayers:
    • In 2006, for the 15th anniversary, Megumi Hayashibara released a new single, Meet Again, and it was accompanied with a new animated music video of the characters, making it the first animated feature for the franchise since the Slayers Premium movie in 2001.
    • The franchise celebrated its 20th anniversary with re-releases: both new cover art and slight changes in dialogue for the light novels and new boxart complete with new supplementary materials for the anime.
  • Space Patrol Luluco acted as one for Studio Trigger's 5th anniversary, and was filled to the brim with references to past Trigger (and Gainax) series complete with a Kingdom Hearts style Massive Multiplayer Crossover and the reveal that Luluco is the true identity of one of Trigger's mascots.
  • Time Bokan:
    • For the 40th anniversary of the franchise, Tatsunoko Production released Yatterman Night, a Continuity Reboot of the franchise's second series. Karas was made for the 40th anniversary of the studio itself.
    • Episode 40 of Yattodetaman celebrates the sixth anniversary of the franchise. Here, the characters interpret themselves in a theatrical play and some of the other characters from the previous series appear in the audience during this performance.
    • Time Bokan would get a proper anniversary series for its 45th (doubling as one of the anime launched for Tatsunoko's own 50th anniversary celebration), titled Time Bokan 24.
  • Yu-Gi-Oh!: Bonds Beyond Time marks the ten years of the Yu-Gi-Oh! anime series (not including the Toei series), featuring the main protagonists of the original, GX, and 5Ds series teaming up.
    • Yu-Gi-Oh! The Dark Side of Dimensions commemorates the franchise's 20th anniversary.
    • Yu-Gi-Oh! ARC-V's 73th episode is the 777th episode if all the series' episodes were combined. For this reason, it got a special opening where all of the previous series' protagonists get cameos.
  • On August 2015, in honor of the 10th Anniversary of the Happy Happy Clover series. Comiket 88 sold a Happy Happy Clover Anthology submitted by various artist and fans of the manga in Japan. The anthology also contained artwork celebrating the 10th Anniversary of the original publication of the manga on Ciao Magazine.
  • JoJo's Bizarre Adventure:
    • The 20th anniversary (2007) saw an animated film and video game based on the first part.
    • The 25th anniversary (2012, though it extended to the year before and after) saw the beginning of the first televised anime adaptation of the series (which continued past the anniversary), as well as another video game (covering all the parts this time) and three light novels (Over Heaven, Purple Haze Feedback, and Jorge Joestar).
  • Kuromukuro was made in celebration of PA Works' fifteenth anniversary. Their shiny new facility gets a very brief cameo.
  • Lupin III has had several.
  • Japan held several anime-related events for the 100th anniversary of the earliest known Japanese animation, Nakamura Gatana (released under the Anime-100 banner) in 2017. Well-known animator Akitaro Daichi even created a parody of the short for the occasion.
  • DEVILMAN crybaby, Mazinger Z: Infinity and Cutey Honey Universe were made for the 50th anniversary of Go Nagai's debut.
  • The 100th chapternote  of Kaguya-sama: Love Is War was released the same time as the announcement for the anime.
  • Megalo Box was made for the 50th anniversary of the first volume of Ashita no Joe.


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