The Perfect Insider

Alt title: Subete ga F ni Naru: The Perfect Insider

TV (11 eps)
Fall 2015
3.643 out of 5 from 3,579 votes
Rank #2,827
The Perfect Insider

For most people, finding a dead body on their vacation would mean the vacation is over. However, for Souhei Saikawa, a professor of architecture, and his student Moe Nishinosono, a math prodigy, it's a different kind of challenge. Genius programmer Shiki Magata, one of Souhei's idols, is inexplicably murdered inside the sealed research lab she disappeared to after being found innocent of her parents' murder. As Souhei and Moe take the first steps into a deadly new world, they must untangle the complex web of events and clues leading up to the murder. With danger creeping up around them, this may be the last mystery this pair of human anomalies attempts to solve in THE PERFECT INSIDER!

Source: Sentai Filmworks

my anime:

User Stats

  • 0 watched
  • 0 watching
  • 0 want to watch
  • 0 dropped

Watch online now

Chapter One: White Meeting image

Episode 1

Chapter One: White Meeting

Azure Encounter image

Episode 2

Azure Encounter

Red Magic image

Episode 3

Red Magic

The Rainbow-Colored Past image

Episode 4

The Rainbow-Colored Past

Silver Hope image

Episode 5

Silver Hope

Crimson Resolve image

Episode 6

Crimson Resolve

Gray Boundary image

Episode 7

Gray Boundary

Purple Dawn image

Episode 8

Purple Dawn

Yellow Blind Spot image

Episode 9

Yellow Blind Spot

Aster-Colored Truth image

Episode 10

Aster-Colored Truth

Colorless Weekend image

Episode 11

Colorless Weekend

See all videos

If you like this anime, you might like...



I have a love-hate relationship with A-1. They either make high quality shows that tops the charts every year like Anohana and Birdy, or very promising shows that faceplant mid-way such as Sword Art Online or Oreimo. When I saw that they were doing Subete ga F ni Naru, I was really excited, and really scared. Subete ga F ni Naru is an amazing mystery novel by Hiroshi Mori, that I've read several times. Luckily they managed to capture most of the great aspects of the book. Story: The story itself is fairly generic. though not quite saturated. Our amazingly well-written MCs head to Seafoam island, to meet the a genius, Shiki, whom is being kept locked away for murder. As our duo make their way to see her, the power in the facility suddenly goes out, and Shiki is found rolling out of her room on some dolley shit, in a wedding dress, with her limbs severed. Velma and Shaggy then do their best to solve the mystery. While the beginning few episodes are a bit slow and confusing, the plot train soon hits you with no signs of slowing. It's an incredibly engaging locked room mystery with an end I guarantee none of you will guess. Seriously, the book destroyed my mind. It does throw in some philosophical bullshit here and there thats one of those "2deep4u" kinda things, however it's pretty easy to understand. Animation: When I saw Mamoru Kanbe as the director, I was a bit iffy. He doesn't have too much experience under his belt other than Elfen lied and Demon Prince Enma, which are pretty mediocre, and I really wanted Subete ga F ni Naru to get a great adaption. Luckily my bae Kanbe pulled through. The art-style and attention to detail is superb. I found myself just staring at Souhei's cigarette smoke constantly. The way it flows through the air, how it wavers with the slightest movements, everything was amazing. I may not smoke that dosh, but I can appreciate well animated doobies. The sunset scene near the end captivated me as well. In case you missed it somehow, just focus on the scenery and enjoy the view. The simplistic style they chose by slowly changing the tones without fancy angle changes was phenomenal. Honestly made me think of the low budget scenes in Evangelion but in a good way. Sound: A good opening in an anime will make me love it no matter what it throws at me. The opening to Subete ga F ni Naru proved to be one of my favorites of all time. It was simple, well animated, and sung by a personal favorite of mine. There are so many metaphors in it that I couldn't help but notice something new every time. The anime itself also had great BGM. From the spooky atmosphere, to the simple sounds of pens and lighters, everything fits. Characters: Moe Nishinosono: I don't know why but every time I look at her I feel a familiarity. She reminds me of main grill from Nozoki Ana to be honest, but whenever I compare them there's not much similar. Whatever it isn't important. What is important is how likable she is. She's scheming, witty, smart, cute, and an all around great character. Her back story and development was very well done, and the way she desperately tries to figure out the mystery while Souhei almost has it concluded was adorable. I was afraid they'd portray her as a clingy student in love with her teacher, but instead they gave her a mature and realistic vibe. Best grill by far. Souhei Saikawa: Souhei is the type of male lead I prefer. Intelligent, aware, and not a brick wall. While he does seem to ignore Moe's advances and questions, he proves to be aware of her feelings. He's not as emotionless as other characters similar to him, which is nice. He's able to figure out most of the mystery himself with some help from Velma, and the ending scenes that gave us a glimpse into his inner being and personality was great. All around good match for best grill. Don't feel like doing other characters yet. Maybe later. Or just never. Moe is the only one that I care about honestly. One of best grills other than Mirai.  Overall gud animu. A-1 curse hopefully won't hit this one. Try it if you don't have shit taste and enjoy well made animu.


I'm slightly conflicted about this anime. I stand by the opinion I gathered while watching it that it isn't remarkable at all and quite boring at times. It's a murder mystery anime with loads of philosophical bullshit that they intend to pass on as meaningful and profound. And there's also a smidge of love story thrown in as a bonus.  As for the story, I'm not much impressed by it. The pacing is painstakingly slow. It's a murder mystery, as I said. So we've got our two main protagonists that, after discovering the body of an eminent researcher, decide to act as investigators and start gathering clues to solve the mystery because they are so much more intelligent than the police could ever hope to be. For the most part, it's incredibly repetitive: they summarise all the information they've got after every new clue they find uncountable times, which is annoying to say the least. But what I found most annoying of all is, on the one hand, all the unjustified hype they put on the psuedo-philosophical crap that is the setting against which the crime was carried out; and on the other hand, on the super-intelligence of the two main protagonists in understanding what is going on and identifying the perpetrator and their motives. Really over-rated, in my opinion. The love story gets hinted at during all the anime, and then in the last episode you get a little bit more of an insight into it. It's not exactly a love story, more like the description of the relationship between the two main characters that is, incidentally, of a romantic nature. And this part is more well-executed and believable, in my opinion. The characters. Shiki Magata, the genius researcher who is murdered and who spouts out all the philosophical bullshit - mah. If you overlook all the meaningless philosophical stuff, I don't know that much of a character is left. As for Saikawa-sensei and Moe, the laid-back, apathetic  teacher and the spoilt poor little rich brat who lost her parents, they are better portrayed. I'd say there is next to no development, but as the detective story progresses you kind of get to understand better the relationship between the two. I must admit that I found Moe incredibly annoying, irritating and childish - which I guess is better than indifference. And I couldn't for the life of me comprehend why a university teacher should even begin to feel attracted to her. But she does somewhat redeem herself in the last episode. Saikawa-sensei's personality is similarly well depicted but it similarly doesn't develop at all.  As for animation and sound, they're both decent. Overall and in conclusion, I'm not overly impressed by this anime. Pretentious, would be a correct definition of it, in my opinion. For me, it was mostly a waste of time. 


It's a noitaminA show which I very much enjoyed. There are many people that disliked it, but I was not one of them. Subete ga F ni Naru is a mystery detective show, and, unlike Ranpo Kitan (previously shown on noitaminA), actually has a mystery and detective work. It's a closed room story -- and I found quite interesting. Granted, I don't watch or read many detective stories, but this one really captivated me. It is similarly driven by deeper themes -- philosophical questions about the nature of a person, freedom, love, death. Some found it shallow, pretentious even -- I didn't. I felt like the questions were asked naturally, answers proposed cautiously and not simply, as a lesson from a mentor. There are many doubling themes over the series. The Perfect Insider has two timelines, one, with Saikawa and Moe, and the other in the past, with the young Magata. Both of them are engaging an important to the plot, if a little slow in pacing. I enjoyed the slow build-up, as I absolutely loved the characters interacting. I watched the whole anime in two sittings, introductory 2 episodes, and then 5 and 4. I recommend that you marathon it. The three most important characters are considered to be very bright (Magata a genius, even), and seeing them interact, their wordplay, the dense relationship they have, the three of them, was very compelling. I found it very well written in this aspect. There are also secondary characters like the Director Shindo, or even less interesting ones, which are very one dimensional, but the main characters are fleshed out quite deeply. Visually the series was stunning. The simplistic yet extraordinary character design, the animation and emotion that it conveyed, the backgrounds, the dawn scene -- all were remarkable. As for the sound: voice acting was generally great, apart from the infamous long English scene that felt somewhat forced vocally -- as it made perfect sense from the plot point. OP/ED are remarkably good, not obvious both in their tune as well as visually. The OST had some remarkable tracks. The Perfect Insider is not a perfect anime, however. There are some inconsistencies, or the animation suggests them -- the placement of the second body. The importance of virtual reality in the story even though the viewers are only introduced to it in 6-7th episode. The field of Saikawa and Moe is not clear -- just that they are extremely brilliant, and that Moe is good in maths. And yet she disregarded an important clue. But this can be explained that a) she's not a programmer or a mathematician per se b) she's a person and makes judgement mistakes. There is also an issue with Shiki Magata's sister -- Maki, and her recognition by the directors wife. Again, perhaps rewatching the series would clear those questions. I am certainly going to do so. Unfortunately, despite being an opening novel in the series, the anime will probably not get a next season.  

See all reviews

Related manga


See all characters


See all staff


Custom lists

See all custom lists