However, Nagai wrote a darker-toned manga in order to alert readers of the dangers of the wars based on how dark the narrative becomes with each of Akira's challenges.

In 2018, a remake titled Devilman Crybaby directed by Masaaki Yuasa was created showing an alternate more modern-like retelling of the manga.

Ryo then involves his friend in a ritual called the Black Sabbath, an event where numerous demons plan to merge with humans to infiltrate society.

During the Black Sabbath, Akira merges with Amon, a demon warrior both idolized and feared among his kind for his incredible strength.

Akira learns that other humans are becoming Devilmen, and resolves to contact them to form a team dedicated to protecting humankind from the demons.

Meanwhile, Ryo journeys back to the mansion, where he informs Akira of the world of demons and finds an album about his life, which states he died years ago in a car accident.

During his ensuing existential crisis, Ryo is met by a group of demons led by the demoness Psycho Jenny, who informs him of the reality of his identity.

During a television broadcast, Ryo reveals the existence of Devilmen to the public but does not differentiate them from demons when he shows footage of Akira's first transformation.

While Akira confronts Ryo for answers and learns the truth of his former friend's identity, a mob of humans kill Miki and her family for being associated with him.

However, after returning to Japan, Akira encounters and falls in love with Miki Makimura, and Devilman is tamed by his desire to protect her.

Go Nagai worked on the anime's scenario along with renowned screenwriter and science-fiction novelist Masaki Tsuji, who wrote the scripts for 35 of the TV series' 39 episodes.

[citation needed] Along with the television series, Devilman was also produced as a serialized manga in Weekly Shōnen Magazine beginning in 1972.

[6] When developing the Devilman manga, Nagai was told by his editor to write an alternative take of the anime aimed towards a more mature audience.

[10] A one-shot, which is not originally part of Shin Devilman, but that has always been compiled along with the series in tankōbon, was published in the magazine Variety by Kadokawa Shoten.

[15][16] The story takes place in the year 2025, a roboticist named Fudou Yuuki joins a project involving a large mural depicting humanity's true past as well as the ancient but advanced technology found in Antarctica.

[17][18] A manga series written and illustrated by Fujihiko Hosono, titled Devilman Gaiden: Ningen Senki, was serialized in Kodansha's Monthly Young Magazine from January 23, 2023,[19] to June 20 of the same year.

[24] It was followed by Devilman: Demon Bird Sirène (デビルマン 妖鳥シレーヌ編, Debiruman Yōchō Shirēnu Hen), released on February 25, 1990, by Bandai Visual.

[27] A 10-episode original net animation adaptation produced by Science Saru and directed by Masaaki Yuasa, titled Devilman Crybaby,[28] was released worldwide on January 5, 2018, exclusively on Netflix.

Miki and Ryo Asuka also appear as dogs (with dog-like bodies and human heads) in the Violence Jack manga.

The cast of Devilman also crossed over with characters from Mazinger Z and Violence Jack in the 1991 OVA CB Chara Nagai Go World.

Zona Negativa found the narrative simple since Akira and Ryo learn about the demons and through a party that involves orgies and other controversial themes Nagai is famous for.

[38] Anime News Network initially referred to Akira as an appealing hero based on his kind demeanor, but criticized his relationship with Miki due to how she berates these traits.

As a result, when Akira becomes a more violent person due to absorbing Amon, the review believes Nagai was expressing the idea of a man undergoing growth but still retaining his kind self.

[40] The dark narrative presented in general was noted especially during Miki's death which felt to Jason Thompson ANN to look "like a visualization of a child's nightmare".

[41] The Fandom Post also found the manga to be too gruesome but hoped that more people read it if they can get past its gore.

[43] Thompson was more critical to Nagai's art, stating "his characters' eyes rarely seem to be looking in the same direction, their limbs look like pipe cleaners, and the women are like blow-up dolls with apples glued to their chests.

"[45] Jason Huff of The Anime Review Notes "a couple of enjoyable bits" in the OVA adaptation, yet ultimately recommends Vampire Hunter D instead "if you want to see a splatterfest of grotesque monsters getting all gooey and split in two",.

[46] Helen McCarthy and Jonathan Clements of The Anime Encyclopedia said that the series was brought down by "the messy confluence of Japanese and European mythology".