Anime Reviewer

Top 5 Best Action Anime of 2021

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Action anime is fairly simple to identify because it typically focuses on compelling, expansive tales. The fighting makes up a sizable amount of them. You know an anime is action if it focuses on sequences of intense combat and high-octane action!

Selections for this list were made with popularity and audience rating in mind. We also considered our year’s favorites, including those that went unnoticed! As a crucial element of action anime, the fights are one of the main things you’ll notice. Check out what we discovered!

5. World Trigger 3rd Season

Action anime are a genre that not many people enjoy, but the ones that do are the real fanatics. World Trigger 3rd Season is one of the best action anime of 2021 and it’s coming to an end soon. If you’re a fan of action, science fiction, and fantasy, then this is the season for you!

The season features a thrilling battle between mankind and the alien invaders, and it’s definitely not to be missed. Make sure to check out to find out more about watching it online. Don’t miss out on this epic series – it’s sure to be one of the best action anime of 2021!

  • Episodes: 14
  • Aired: October 2021 – January 2022
  • Studio: Toei Animation
  • Source: Manga

4. That Time I Got Reincarnated as a Slime Season 2

Ready to get your action anime on? 2021 is a big year for anime fans, as a new season of That Time I Got Reincarnated as a Slime is coming to Netflix. If you’re a fan of the series, be sure to set your calendar and mark the date in 2021 so that you can catch all the action.In the meantime, check out the first season of the series to get a taste of what’s to come.

If you’re new to the series, don’t worry – the first season is a great place to start. A new season of That Time I Got Reincarnated as a Slime is also coming to Netflix in 2021, so be sure to add it to your watch list! Fans of the series will love seeing what happens next for their favorite characters. So, what are you waiting for? Get your action anime on!

  • Episodes: 12
  • Aired: January 2021 – March 2021
  • Studios: 8bit
  • Source: Manga

3. 86 Part 2

There is little doubt that Area 51 is well-known. However, for a while, it remains unknown whether or not it actually existed. The “Handlers” (otherwise known as Juggernaut pilots) who reside in the Republic of San Magnolia’s 86th factor, or section, are also unknown to the general public.

Even while the Republic insists that their conflict with the Empire of Giad is entirely moral and involves no loss of human life, this does not explain the Handlers or the 86s. One of our main characters, Shinei Nouzen, awakens in part 2 under the supervision of the Federacy of Giad, which succeeded the Empire following the insurrection.

As the conflict rages on in earnest, Shinei and his saved companions must get used to their new lifestyles after receiving citizenship in the Federacy. As was already said, there is war in the entire series. There are many ups, downs, and tragedies in it.

The stunning fusion of conventional animation and CGI, which is most apparent during the battles, is better than all of that, though. Unfortunately, mixes like these don’t always work, but we (and reviewers) think the season’s graphics are eye-catching and enjoyable to watch.

Great investigations of the universe and the traumas the characters have experienced are interspersed between the clashes in the excellent choreography. It’s challenging to find this selection lower on our list with such a well-planned universe!

  • Episodes: 12
  • Aired: October 2021 – March 2022
  • Studios: A-1 Pictures
  • Source: Light novel

2. Vivy: Fluorite Eye’s Song

If you’re a fan of action anime, you won’t want to miss out on Vivy: Fluorite Eye’s Song. This anime is set to be one of the most anticipated releases of 2021, and for good reason. The story follows a young woman who is targeted by a group of people with unknown motives.

 Along the way, she discovers her past and makes new friends who help her fight for her survival. The characters are well-developed and the action is intense, making it an engaging watch for all ages. So, whether you’re a seasoned anime fan or just getting started, make sure to add Vivy: Fluorite Eye’s Song to your list of viewing priorities.

  • Episodes: 13
  • Aired: April 2021 – June 2021
  • Studios: Wit Studio
  • Source: Original

1. Demon Slayer: Kimetsu no Yaiba Entertainment District Arc

There’s no doubt that Demon Slayer: Kimetsu no Yaiba is one of the most entertaining anime of 2021. The entertainment district arc will leave you on the edge of your seat, and the battle scenes are nothing short of spectacular. If you’re a fan of anime with a lot of action, this is definitely the series for you.

Make sure to catch all nine episodes when they air in 2021, because you won’t want to miss out on one second of the excitement. In the meantime, be sure to read up on the series to get a better understanding of what’s going on. If you’re already a fan, be sure to share your thoughts and impressions on social media to share the love!

  • Aired: December 2021 – Ongoing
  • Studios: ufotable
  • Source: Manga
  • Episodes: 11


It’s the year 2021 and the anime industry is booming! With new anime series coming out every single day, it can be hard to decide which series to watch. But don’t worry, we’ve got you covered! In this blog post, we’ve selected 5 of the best action anime series of 2021 and outlined why you should watch them. So whether you’re a fan of action anime or just want to broaden your horizons, make sure to check out these series!



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