Subete ga F ni Naru

The Perfect Insider

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Alternative Titles

Synonyms: Everything Becomes F: The Perfect Insider
Japanese: すべてがFになる THE PERFECT INSIDER
English: The Perfect Insider
German: The Perfect Insider: Subete ga F ni naru
Spanish: The Perfect Insider
French: The Perfect Insider: Surdduee et Meurtriere - Elle est la Cle de l'Enquête
More titles


Type: TV
Episodes: 11
Status: Finished Airing
Aired: Oct 9, 2015 to Dec 18, 2015
Premiered: Fall 2015
Broadcast: Fridays at 00:55 (JST)
Licensors: Sentai Filmworks
Studios: A-1 Pictures
Source: Novel
Genres: MysteryMystery, Sci-FiSci-Fi, SuspenseSuspense
Themes: Adult CastAdult Cast, DetectiveDetective, PsychologicalPsychological
Duration: 23 min. per ep.
Rating: R - 17+ (violence & profanity)


Score: 7.241 (scored by 6898568,985 users)
1 indicates a weighted score.
Ranked: #30452
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #1369
Members: 170,973
Favorites: 709

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Ranked #3045Popularity #1369Members 170,973
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Episodes: /11


In a research facility hidden away on a remote island, genius programmer Shiki Magata has lived as a recluse for years. She rarely sees guests, but associate professor Souhei Saikawa and university student Moe Nishinosono still seek her out. However, their meeting is cut short when they are caught up in a locked-room murder mystery.

Everything is not as it seems, and many secrets are hidden. Within an isolated facility, a seemingly impossible and gruesome crime takes place, and Saikawa and Moe must unravel the truth behind the murder and Magata's shrouded past.

[Written by MAL Rewrite]


Subete ga F ni Naru is based on the Japanese mystery novel of the same name by Hiroshi Mori, which was released on April 5, 1996.

Episodes 1 and 2 were previewed at a screening at Zepp Tokyo on September 30, 2015. Regular broadcasting began on October 9, 2015.

Episode Videos

Related Anime

Characters & Voice Actors


Kanbe, Mamoru
Director, Episode Director, Storyboard
Shimizu, Katsunori
Sound Director


Opening Theme

Apple Music
Amazon Music
Youtube Music
"talking" by KANA-BOON

Ending Theme


Apr 9, 2024
Subete ga F ni Naru is contemporary psychological mystery anime that invites you to think along, while never quite fully explaining itself. It touches on some rather sensitive and disturbing romance and sex themes, as well as exploring the workings of the human mind in a more philosophical sense.

Animation / Art / General Visuals - 8/10

The setting of the show really doesn't leave much room for art or animation to shine, but for this type of show, it looks perfectly acceptable. The character designs and detail is solid, environments sufficiently detailed, and animations clear enough to get emotions across.

Sound / Music / Voice Acting - ...
Aug 15, 2023
Mixed Feelings
After passing it over at least half a dozen times while deciding which anime to watch, my wife and I finally gave The Perfect Insider a go and if nothing else it was certainly unique and didn't feel overly like any other anime we've seen. At just 11 episodes it's a fast, approachable program, though it somehow manages to feel like it doesn't truly even have enough content to fill that very short run time, and it certainly loses steam towards the end as well, leaving us with an overall mixed bag that I'll now discuss with a bit more detail.

From the very beginning the ...
Jan 1, 2023
How about just dont watch this anime for your own sake someone recommended this anime was like "Sakurako-san no Ashimoto ni wa Shitai ga Umatteiru" but boy were they wrong... the plot sucked so bad that i had to warn people not to watch. This anime will get ur head scratching wtf is going... The two protagonists are somehow shut in a closed room case you would think it would be full of suspense and action but instead u get them siting on coaches talking trash with each other for God knows what reason. The mystery of the case just unfolds by itself and in ...

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Recent Forum Discussion

Poll: Subete ga F ni Naru: The Perfect Insider Episode 1 Discussion ( 1 2 3 4 5 ... Last Page )
Stark700 - Oct 8, 2015
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Stark700 - Dec 10, 2015
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Stark700 - Dec 17, 2015
228 repliesby Destroyer31 »»
Oct 25, 2023 10:55 PM
For anyone who want to know why shiki escaped the island and her story in light novel
Baoyeuconpo9999 - Mar 10, 2023
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Mar 11, 2023 8:59 AM
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