

TV series
Deep Insanity: The Lost Child
2021, Japanese, on TOKYO MX.
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.
- Seasons
- 1
- Episodes
- 12
- Episode length
- 24 min
- Status
- Ended in 2021
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Where to watch Deep Insanity: The Lost Child
Deep Insanity: The Lost Child is streaming on Crunchyroll and Sony Liv in India.
Availability in India as of 9 November 2026. Streaming data by JustWatch.
Latest episode
S1 E12: Resolution
Aired 29 December 2021
Seasons 1
Cast & crew
Details
- First aired
- 13 October 2021
- Last aired
- 29 December 2021
- Network
- TOKYO MX
- Original title
- ディープインサニティ ザ・ロストチャイルド
- Language
- Japanese
- Country
- Japan
- Type
- Scripted
- Rated
- TV-14
Check ratings elsewhere
News & fan talk
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Deep Insanity: The Lost Child: quick answers
Is Deep Insanity: The Lost Child worth watching?
Deep Insanity: The Lost Child doesn’t have enough ratings for a verdict yet.
How many seasons of Deep Insanity: The Lost Child are there?
Deep Insanity: The Lost Child has 1 season and 12 episodes, about 24 minutes each.
Is Deep Insanity: The Lost Child finished?
Yes. Deep Insanity: The Lost Child ended in 2021, so you can watch the whole story.
Which OTT platform is Deep Insanity: The Lost Child on?
Deep Insanity: The Lost Child is streaming on Crunchyroll and Sony Liv in India. (Checked 9 November 2026.)
Deep Insanity: The Lost Child parents guide: is it suitable for kids?
Deep Insanity: The Lost Child is rated TV-14. Check the rating guidance before watching with young children.
What shows are like Deep Insanity: The Lost Child?
If you liked Deep Insanity: The Lost Child, try Creature Commandos, Bye Bye, Earth, Gachiakuta.
