Phi-Brain

Watch Phi-Brain

  • 2011
  • 3 Seasons

Phi-Brain is an anime series that centers around Kaito Daimon, a genius puzzle solver who is enrolled in the prestigious high school known as Root Academy. Kaito harbors a deep love for puzzles and has a natural ability to solve any puzzle he comes across. One day, he is approached by the school's principal, who introduces him to the world of Phi-Brain puzzles.

Phi-Brain puzzles are puzzles that have been created by an ancient civilization known as the Orpheus Order. The Orpheus Order was a mysterious organization that was obsessed with puzzles and believed that solving them could unlock the secrets of the universe. The Order left behind a set of puzzles that were said to be so difficult that they were unsolvable. The principal believes that Kaito has the potential to solve these puzzles, and he introduces him to his assistant, Nonoha Itou, who becomes Kaito's puzzle-solving partner.

Throughout the series, Kaito and Nonoha are tasked with solving various Phi-Brain puzzles, each more difficult than the last. Along the way, they meet other puzzle solvers who are also searching for the secrets of the Orpheus Order. These include Gammon Sakanoue, a former rival of Kaito's who becomes his friend, and Cubic Galois, a genius mathematician who helps the team solve some of the more complex puzzles.

As they delve deeper into the world of Phi-Brain puzzles, Kaito and his friends begin to uncover dark secrets about the Orpheus Order and their ultimate goal. They discover that the Order is not just interested in unlocking the secrets of the universe but also has sinister intentions that could threaten the safety of the world.

The show explores themes such as teamwork, friendship, and the importance of never giving up. Kaito and his friends are faced with seemingly impossible challenges, but they always manage to overcome them through their perseverance and cooperation. The show also touches on the idea of using one's talents and intelligence for good rather than for personal gain.

Phi-Brain features an impressive cast of voice actors, including Kaori Shimizu as Nonoha Itou, Jun Fukuyama as Kaito Daimon, Mamoru Miyano as Souji Jikugawa, Daisuke Ono as Rook Banjou Crossfield, and Satsuki Yukino as Mizerka. The show also features music by composer Akio Izutsu, who creates a fun and upbeat soundtrack that perfectly matches the show's adventurous tone.

Overall, Phi-Brain is an entertaining and engaging anime series that is sure to keep puzzle enthusiasts on the edge of their seats. The show features a unique premise, well-written characters, and challenging puzzles that will leave viewers itching to solve them themselves. Whether you're a fan of puzzles or just looking for a fun and exciting anime series, Phi-Brain is definitely worth checking out.

Phi-Brain is a series that is currently running and has 3 seasons (76 episodes). The series first aired on October 2, 2011.

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Seasons
It's Insanely Fun to Be Alive
25. It's Insanely Fun to Be Alive
March 26, 2014
Kaito and Raetsel reach a turning point in their battle to solve the Puzzle of God. To solve this puzzle they must resort to unforeseen tactics.
Even if Something's Missing
24. Even if Something's Missing
March 19, 2014
In the Puzzle of God, Kaito and Raetsel must travel through their pasts and alter them. However, they must be careful not to let the puzzle consume them. If it does, they could spend all eternity wandering the Time Maze!
The Two of Us!
23. The Two of Us!
March 12, 2014
The Puzzle of God begins tomorrow! Kaito and Raetsel are both eager to face the puzzle, but one of them seems ready and one of them doesn't. Raetsel has a blast partying the night away with the girls.
The Two of Us
23. The Two of Us
April 12, 2014
Kaito locks himself in his hotel room to reflect on the outcomes of the last few puzzles he has solved. Raetsel gets him out of the dumps and decides that the best way to defeat orpheus is to work together.
That's Why You Mustn't Hesitate
22. That's Why You Mustn't Hesitate
March 5, 2014
The puzzlers are pitted against each other in a game that will test their puzzle solving skills and their camaraderie.
Kaito, You've Lost
21. Kaito, You've Lost
February 26, 2014
Fed up with waiting around for Orpheus, Kaito accepts the challenge and is inadvertently dropped into a puzzle to face a close friend.
Cheers to 100-Star Jin
20. Cheers to 100-Star Jin
February 19, 2014
Raetsel accepts Orpheus's puzzle challenge only when he promises to bring back Jin.
Because You Were Watching
19. Because You Were Watching
February 12, 2014
Miharui is worried. She hasn't heard from her brother Gammon in some time, so she goes to Kaito for help. Gammon, meanwhile, is headed to POG Headquarters, desperate to find any sign of Rook.
It's Okay if I Can't Solve Puzzles
18. It's Okay if I Can't Solve Puzzles
February 5, 2014
Orpheus shows Kaito, Nonoha and Freecell what altering the past could entail. He promises that this power will be theirs if they become Phi-Brains and offer their bodies to him for a short period of time. Will they submit to temptation...?
Become a Phi-Brain
17. Become a Phi-Brain
January 29, 2014
Orpheus has been resurrected! He wants to become the perfect Phi-Brain, even at the cost of mankind. But first, he needs a new vessel. He offers Jin's life in exchange for the life of a Phi-Brain, but will anyone take the bait?
The Journey Ends
16. The Journey Ends
January 22, 2014
Nonoha and Kaito break the truth to Raetsel, both about Jin as well as about Enigma. But will that be enough to finally win her over? If Raetsel decides she doesn't want to share Jin, there's only one way to duke things out... with puzzles!
I Want to Make a World With Full Bellies
15. I Want to Make a World With Full Bellies
January 15, 2014
While the Baron is revealing Jin's past and his ties to the fallen puzzler Lavoushka. Enigma shows up and reveals his past and his motives for having the puzzlers eliminated.
If It Were the Us of Then
14. If It Were the Us of Then
January 8, 2014
Rook and Freecell must go all out if they hope to free Raetsel's puzzle. Souji has returned from the Republic of Amgine, bringing back stacks of confidential information. Can Baron use the information to figure out who Enigma truly is?
She's Too Shallow
13. She's Too Shallow
January 1, 2014
Raetsel has decided that it is time to face Kaito personally. She's convinced that the "something" she's lacking is "determination." So she's ready to go all out! But if she's not pulling any punches, why is her puzzle so easy...?
Is That What You Thought I'd Say?
12. Is That What You Thought I'd Say?
December 25, 2013
Herbert is bent on defeating Kaito in a puzzle battle. He'll do anything it takes to taste sweet victory, even if it means using thepower of the Rings. Can Kaito and his friends defeat the ultimate king of cheaters?
Just Now, I Was Thinking of Someone
11. Just Now, I Was Thinking of Someone
December 18, 2013
Ana and Cubik have decided to help Kaito solve Raetsel's puzzle! Whenthey reach the coordinates Kaito gave them, they discover that Kaito and his group got caught up in some bad weather. Can they find the next clue on their own?
What Is Your Real Dream?
10. What Is Your Real Dream?
December 11, 2013
Kaito and company find themselves trapped in another Kenja puzzle. Kaito is given the option of sacrificing his friends to get hints, while Gammon and Nonoha are given the same option. Someone must be sacrificed to beat the puzzle, but who?
Let's Go to That Place
9. Let's Go to That Place
December 4, 2013
How on Earth did Kaito find himself entered in a cross dressing contest? Meanwhile, the school principal has installed a new puzzle within the school, and Nonoha's been taken hostage and put right in the middle of it!
Farewell Forever
8. Farewell Forever
November 27, 2013
After escaping from Jin's Puzzle of Fools, Melancholy invites Kaito and his friends over to her house. Freecell hopes to use this unexpected opportunity to mend their relationship, but he has a long and bumpy road ahead of him...
Would You Also Like Some Flowers?
7. Would You Also Like Some Flowers?
November 20, 2013
Bent on vengeance, Melancholy becomes a Master Brain. Freecell wants to leave the world of puzzles behind, but Melancholy won't let him as she drags him into a Puzzle of Fools. Can Kaito and Gammon save him?
Rae-Rae Is a Feline Friend
6. Rae-Rae Is a Feline Friend
November 13, 2013
Gammon is about to blow a gasket when he learns that he has the lowest bounty now. He's desperate for a chance to boost his bounty, but he may have gotten more than he bargained for when Demolition Man challenges him to a puzzle battle.
I Get That Feeling
5. I Get That Feeling
November 6, 2013
Jin once told Rook that Puzzles are chains. Puzzles are also mirrors. Unsure how to interpret those words, Rook jumps on the chance to challenge a Puzzle of Fools that Jin once fought in the hopes of gaining insight into his heart...
A Good Meal Can Resolve Most Problems
4. A Good Meal Can Resolve Most Problems
October 30, 2013
Kaito and Raetsel are busy arguing over who knows the 'real' Jin while Cubik fights Dr. Theorem in a puzzle battle. The puzzle is math based, so it should be right up Cubik's ally. But he seems to be having a hard time solving it...
Even So, I Believe in Him
3. Even So, I Believe in Him
October 23, 2013
Tensions grow tight when Kaito is unable to prove to Gammon that Jin is trustworthy. Raetsel decides that this is the perfect time to transfer to their school. And suddenly Jin challenges Kaito to a puzzle battle...!
You Don't Know Anything
2. You Don't Know Anything
October 16, 2013
It's puzzle time! Kaito, Nonoha and Rook must find the right exit before they get turned into pancakes. At Root Gakuen, Gammon, Ana and Cubik have to defeat Whodunit's color-coded number game or get toasted alive!
Raetsel
1. Raetsel
October 9, 2013
Mysterious ruins are never a sign of good things to come. Kaito and his friend Nonoha discover a strange puzzle while exploring the area, and not solving it right could mean the end for both of them!
Description
Where to Watch Phi-Brain
Phi-Brain is available for streaming on the Anime Network website, both individual episodes and full seasons. You can also watch Phi-Brain on demand at Amazon and Apple TV.
  • Premiere Date
    October 2, 2011