summation
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The sequel to the animation often promises the story by hanging on a question that is not answered.
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Series like No Game No Life, Deadman Wonderland and BTOOOM! It is finished with a loose that needs satisfactory conclusions.
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Despite financial problems and nonlinear storytelling, fans are eager to see the sequel to this unresolved animation series.
Animated enthusiasts often find anger to finish the series with many questions that are not answered. Some animations do not satisfy us by finishing everything well, and some more promises and some answer all the final questions. Animation can have an unfinished story for various reasons, such as difficult adaptation and production delays, but the show is still qualified to end properly.
The following is a list of eight animation series. I kept the audience at the edge of the seat, but only stopped when the most important moment was about to happen. Everyone wants to know how this story ends, and the sequel will do so.

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These are part of the most popular sequel on the screen in 2025.
1
There is no life no life
The brothers and sisters who conquered the game world left us.
The novel attracted a lot of readers with dazzling animations and pairs Sora and Shiro. There are many fans in this series, but the second season has not been announced until now. This occurs for various reasons. The main reason for this break is that the source book has become difficult to be released on time due to the author's health. Because of this, there is little new adaptation.
The argument of plagiarism for the author could reduce the reputation of the series, which may allow producers to support the new season. Interestingly, the ending and high budgets of the first season are hard to understand.
2
Deadman Wonderland
A deadly prison game without conclusion
This series is a bloody game that introduces us to jail in a park where visitors entertain. Many plots were unfinished by how the story ended in the animation. The main reason for the lack of sequel is part of the story from the original cartoon.
In addition, Manglobe, a production studio, has been bankrupt in the face of financial problems, so there will be no episode anymore. Viewers' interest in sales of television and DVDs has reduced the chances of maintaining the series.
3
btooom!
Survival game begging for closure

btooom!
- Release date
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October 4, 2012
- network
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Tokyo MX
- move
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Kazuo Nogami, Hideki Hosokawa, Makoto Kato, Takahiro Kawakoshi, Noriaki Saito
In the series btooom!Players are placed on an uninhabited island and defeat each other with special bombs. The way the show mixes tension, quick behavior and plans attracts people from the beginning. Investigating human psychology enriches the ideas of survival games. The animation remained a lot of mysteries to fans because it did not complete its own story or explore possible development of all characters. Manga finishes most stories, but the ending of the animation seems to be scattered at a light and loose end.
The sequel can show the results of the character and bring the anxiety of the series to the peak. But even though this idea attracted viewers' attention, the animation could remain as a dream for these series fans because it was not as popular as it was in Japan. Many did not buy a copy of the Blu-ray, and only a very small number of sales were recorded in 2012 in the most overlooked animation series. In addition, the mobile game version has not been successful since the first day and has fallen quickly on the app chart. The first season was not sold properly and it was not warmly welcomed, so there was no future in the second season.

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4
Luster
A wonderful jewelry world that needs a solution
series, LusterIn the new post apocalyptic environment, we distinguish itself because of the beautiful animation and ideas around jewelry creatures. And maybe one of the best known CGI adaptations at that time. It is rare because the CGI of the animation is always accepted by fans as negative. The season was over and fans were looking forward to season 2 as the series reached the last highest.
Many of the main mysteries in the series could not be explained. Unpredictable release timing of cartoons had to be suspended several times. The original running of the manga ended in April, but if you take a long break between the releases, the drive of the show would have been disturbed for another season.
5
Baccano!
A chaotic story that needs a sequel
story Baccano! In the United States, which includes immortality and gangster, it is built with several plots set at the time of prohibition. The fans missed a lot of stories because the animation was recognized, but the animation did not deal with the entire novel.
There is no sequel yet because the animation is not well performed in sales. The game received some attention from fans, but did not get the sales needed to receive other investments. The show continued to be willing to follow because the show could be more difficult to follow because the show was heard in a new way in a new way.
6
86
War, sacrifice and unfinished battle
supervision |
TOSHIMASA ISHII |
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Written by the author |
TOSHIYA ōNO |
studio |
A-1 photo |
Release date |
April 11, 2021 |
story 86 The emphasis is on how the marginalized soldiers, known as “86”, try to survive in battle and cruel political situations. Animation is not only exciting to watch, but also helps viewers understand the emotional consequences of war. The first two seasons dealt with a lot of materials, but the important conspiracy details and the life of the protagonist are still not completed. Since the series is not completed in the animation, there is a plan to adapt to the light novel. The sequel can finish the first story and develop a major topic of marking and survival. 86.
The part where some cartoon projects canceled are the results of the artist who performs a series of bad health. This problem may cause continuous production of animation. In addition, many challenging themes and difficult themes made the series very popular among critics, but did not help attract many audiences, which could affect the choice to adapt again.
7
Picture, ash and illusion
A harsh fantasy world that speaks more
The series focused on the rough adventure taken by the traveler group when we arrived in a mysterious world. This animation was unique in that it moved forward slowly thanks to the character. However, there were not many commercial success, and there was little selling Blu-ray release and other products.
These financial conditions led to a choice that did not create a second season. In addition, the intentional style and ordinary behavior of the animation may have prevented a wide range of audiences from being interested. Nevertheless, the series ends as the character begins to find out what his world and life are. The story of the source material continues to provide a lot of materials for new novels. The next season was able to share more of what happened to the characters before coming to Grimgar.
8
WOTAKOI: It is difficult to love for otaku
Romantic comedy that requires more love
WOTAKOI Focus on your friend's life at work that is also a fan of animation, cartoons and games. It's fun to see because of a lively atmosphere, good humor and lovely hero. It's easy to know how true and sweet couples are. The love story for most support characters remains unfinished. Since many fans are waiting hard, the sequel can help these characters settle romance.
WOTAKOI: It is difficult to love for otaku I caught viewers while watching Otaku's romance. It was a lot of popularity, but 11 episodes and some OVAs were released for the TV series, so the story of the original cartoon was not explored much. The commercial success of the animation is one of the reasons why the whole sequel is not preferred. Our cartoons have been a big success, but the animation has not attracted a large number of viewers or made a lot of money. When the animation starts with a small viewership, it is a problem in the Slice-of-Life series to get additional funds to adapt the rest of the story.
Many plots, character stories and new worlds are still not explored, so this story requires time to reach the maximum form. The sequel can tell fans from the last cliff hanger to the completion, giving them a long -losing thing. We hope that the industry will be able to pay attention and regain the pleasant series that fans like.

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Dark animation sequel
The sequel to this animation was darker than the tones and themes set in the original series.