Deep Insanity: The Lost Child

Madness and unawakening sleep, Randolph syndrome. This new illness is slowly but steadily approaching humanity, caused by the huge underground world Asylum that appeared in Antarctica. There are strange creatures different from the earth, and unknown resources. People bet their lives on the depths of the mysterious new world to get huge wealth, organizational plots, or their own ambitions. And here alone, a young man with a wish in his heart is trying to challenge the front line of Asylum. (Source: MAL News)

User Rating : 5.55



Alternative Titles
Title : Deep Insanity: The Lost Child
English : Deep Insanity: The Lost Child
Japanese : Deep Insanity THE LOST CHILD
Synonyms :

Type : TV
User Rating : 5.55
Episodes : 12
Premiered : fall 2021
Aired : Oct 13, 2021 to Dec 29, 2021
Airing Status : Finished Airing
Genres : Sci-Fi
Duration : 24 min per ep
Rating : PG-13 – Teens 13 or older
Broadcast : Wednesdays at 00:30 (JST)
Producers : Square Enix , Bit grooove promotion
Licensors : Funimation
Source : Other
Season : fall
Themes : None
Demographics : None
Rank : 10591
Popularity : 3125
Members : 36379
Favorites : 238

Characters & Voice Actors

Shigure Daniel Kai
Shimono, Hiro
Blanc, Leslie
Toriumi, Kousuke
Chan, James
Machado, Arthur
Portuguese (BR)
Tanaka, Takako


Oonuma Shin

Gou Fumiyuki
Sound Director

Shimoyama Kento
Series Composition

Itou Kashitarou
Theme Song Performance

Suzuki Konomi
Theme Song Performance

Kimura Katsuhiro

Theme Songs

“Inochi no Tomoshibi (命の灯火)” by Konomi Suzuki
“Shinju-iro no Kakumei (真珠色の革命)” by Kashitarou Itou

Related Anime


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User : Wosee
overall : 6 story : 6 animation : 4 sound : 7 character : 7 enjoyment : 6
Review : The story starts with the 1st episode establishing the setting,then 1 episode each for everyone of the main cast to be fleshed out and establish the bond with the MC,while the rest is about unveiling the plot. All the important characters are fleshed out a lot,expect for the main villain sadly,the main character starts pretty weak but develops pretty well and has good pay off to his development and so does fleshing out his bonds with the others. If you can get past the horrible CG with the mostl…
User : Daxonzion-
overall : 4 story : 3 animation : 4 sound : 6 character : 2 enjoyment : 3
Review : Seasonal animu review time This anime right here actually picks my interest the first time when the PV drops. It shows a nicely animated scene and actually gives off some mysterious vibes to it, making me interested to watch it and thinking this could be a potentially good animu. But those interest starts to fade away right after the 1st episode drops, as it is one hell of a monotonous episode, and that monoton quality stays constantly as the episode goes on, at least on the first 4 episodes. Le…
User : i-like-this
overall : 1 story : 2 animation : 3 sound : 2 character : 1 enjoyment : 1
Review : Deeply Insufferable: The Lost Cause. Deep Insanity is another anime with literally nothing to offer. The stories premise is pretty much a Sci-Fi version of Danmachi. A strange, underground labyrinth world which produces strange creatures and resources appears and soldiers/miners are sent down my military and political organisations to secure it’s power and riches. The only problem is that the underground world is also responsible for Randolph syndrome, a madness inducing illness which is slowly …

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