Through the popular blog Yaraon A ranking was revealed that lists the worst anime of all time, where the worst series are contemplated that, due to bad animation and catastrophic errors in their narrative, were not to the liking of the public in Japan and generated a lot of criticism.
The worst anime according to Japan!
- 20. sakugyou arifureta from sekai saikyou
- 19. Amnesia
- 18. 100-man no inochi no ue nor ore wa tatte iru
- 17. one piece
- 16. Glasslip
- 15. kill me baby
- 14. Mahou Sensou
- 13. Yu-Gi-Oh! ARC-V
- 12. pupa
- 11. Gdress: The Movie
The 10 worst anime series according to Japan are
10. Kenja no wizard
Synopsis of Kenja no magician:
A young man who had surely died in an accident was born in another world when he was a baby! After that, he was picked up by the patriot hero “Sage” Merlin Wolford and was given the name of Shin. He was raised as a grandson by Merlin and absorbed Merlin’s teachings by gaining surprising power. However, when he turned 15, his grandfather, Merlin said, “I forgot to teach you common sense.”
The fantasy life of another unconventional world of a “normal” child begins here!
9. Mekakucity Actors
Synopsis of Mekakucity Actors:
The plot is based on Jin’s series of songs titled Kagerou Project. In this, Shintaro Kisaragi lives a normal life until he meets a cyber-girl named Jan, who appeared on his computer screen when someone anonymously sent him a mysterious email a year ago.
8. Seiken Tsukai No World Break 
Synopsis of Seiken Tsukai No World Break:
The story focuses on a world where certain teenagers inherit the memories of their past lives. The story focuses on Moroha Haimura, who not only remembers his past life as a knight, but also presents the memories of two past lives.
7. Ore Ga Suki Nano Wa Imouto Dakedo Imouto Ja Nai
Synopsis of Ore Ga Suki Nano Wa Imouto Dakedo Imouto Ja Nai:
The “Blurry Romantic Comedy Clutch” series is centered on younger sister Suzuka Nagami and older brother Yuu Nagami.
Suzuka is a beautiful third year high school girl, she has excellent grades and is the president of the student council. She wrote a novel about a little sister who adores her older brother and the novel won an award. After discussing the matter, Yuu is the one who debuts as the author of the light novel to replace Suzuka, under the pseudonym of Chikai Towano.
6. School Days
Synopsis of School Days:
Makoto Itou travels to school by train every day. At the beginning of her second period, she falls in love with a girl named Kotonoha Katsura, who attends the same school and travels on the same transport, but they are not in the same class. By paying attention to an urban legend, he takes a picture of him with his mobile phone (if you have the photograph of the person you like and no one realizes your love will come true).
5. Chargeman Ken! 
Synopsis of Chargeman Ken!:
Chargeman Ken! It is set in a futuristic city from the year 2074. The protagonist is Ken Izumi, a ten-year-old boy capable of transforming himself into the superhero Chargeman to defend the land of the Juralians, an alien species that aims to enslave the humanity and steal the planet’s resources.12
4. Artificial Insect Kabuto Borg Victory by Victory
Synopsis of Artificial Insect Kabuto Borg Victory by Victory:
The battles between Kabutoborgs have become popular enough to hold world tournaments. The main character Ryuusei is an enthusiast of these battles. Together with his friends Katsuji and Ken, he continues to fight new enemies day after day.
3. Isekai WA Smartphone to Tomoni
Synopsis of Isekai WA Smartphone to Tomoni:
argument. Touya Mochizuki, 15, is accidentally killed by a lightning bolt that escaped God. … Touya uses his request to bring his smartphone (smartphone) to the new world with him and thus, God obeying his request modifies the phone to work in the New World.
2. Dynamic Chord
Synopsis of Dynamic Chord:
Dynamic Chord is a record company that represents the 4 best bands in the country (Rêve Parfait, with its progressive music style, Liar-S, an emo-rock band, Kyoso, made up of talented artists, and Apple-Polisher, that merge dance and rock), showing their experiences, disagreements and trajectory within …
Synopsis of Pop Team Epic:
What can we say about this series starring the apparently innocent popuko and pipimi? Well, the truth is that we don’t know what to say, since the series offers us humor, confusion, madness and healing in equal parts. What is clear is that it will not leave anyone indifferent, and it is that these two peculiar girls are willing to stay and occupy a place in our hearts, even if it is using force. Will they have to use it with you too?
What kind of anime are listed in this ranking?
This ranking includes those anime that, due to various factors such as scenarios with poor quality, animation errors, a direction or horrible script, earned the contempt of the community.
Some of the reasons behind these bad animes is the lack of personnel, the lack of capital and the short delivery times that cause the production of a mediocre series. It remains to note that some series are listed for their bad animation, but that does not mean that they are narratively bad.
