Phi Brain: Puzzle of God

Kaito Daimon, an average high schooler is a genius at solving puzzles. Apparently, Kaito went to did a table Puzzle route in his school for some "tests" which was referred on his Device. Soon later, he went to look for the Puzzle Club Pres…

In his powerful state known as 'Phi-Brain', Kaito manages to solve the puzzle, allowing them both to escape the ruins. Later, Kaito becomes annoyed by a puzzle solver named Gammon Sakanoue, who carries the title 'Galilleo'. As Kaito receiv…

Kaito meets a boy genius solver named Cubic Galois, who carries the title of 'Edison' and prefers mathematics other puzzles. He attaches a strange bracelet onto Kaito's arm, which causes his head to hurt whenever he thinks about puzzles. A…

Kaito is given a Sage Puzzle to solve on the weekend, where he is to be partnered with Ana Gram, an art enthusiast who holds the title of 'Da Vinci'. They visit the mansion of a late artist, with its butler revealed to be a Giver from the …

The POG extend an invitation to Kaito, who is accompanied by Nonoha and Gammon, to their headquarters. As the three make their way through the maze to meet with the POG's head, Kaito notices something eerily familiar about the puzzles they…

Kaito is still tormented by his memories and unable to solve puzzles. Cubic researches into the Orpheus bangle, theorizing Kaito's breakdown was a result of his brain power being completely controlled by emotions. He advises Kaito to not s…

As Nonoha visits some kindergarten students, their teacher, Madoka, gives Kaito a letter, which the others suspect to be a love letter. Suspicious about the contents, Nonoha and Gammon follows Kaito to the meeting point, where it's reveale…

Kaito is contacted by Genius Okudera, a man he once saved from a ruin, who invites him, Nonoha and Ana to a puzzle-themed hotel resort in Hokkaido to solve an alleged Kenja Puzzle being displayed as the centerpiece. After spending a day of…

As Root Academy prepares for a cultural festival, where Kaito finds himself reluctantly entered into a crossdressing contest, the principal, Baron Kaidou, agrees to install a Kenja Puzzle within the academy. Just as Kaito gets into his cro…

As Kaito dreams of appearing on a TV puzzle show hosted by Elena "Antoinette" Himekawa, Gammon, who had been Elena, jumps in to protect her when it looks like she is being cornered, though she is not too happy about the rescue. As a POG Gi…

Elena enlists the help of Kaito and his friends as extras in a new sentai show she is starring in. Later that night, Elena brings everyone together for a Kenja Puzzle in which they must construct a three-dimensional puzzle within a time li…

Kaito is surprised to meet his childhood friend, Rook Banjou Crossfield, who unbeknownst to him is the head of POG Japan, and learns he is to become an exchange student at Crossfield Academy in England. Upon arriving at the academy, Kaito …

As Kaito pushes through the puzzle, believing Rook is in danger, Nonoha and the others decide to fly to England, learning the truth about Fool's Puzzles from Souji on the way. As Kaito reunites with Rook, he tells him about their old maste…

As Kaito remains unconscious in hospital, Cubic is invited by Rook to take on a puzzle and accepts it, wanting to prove his friendship to Kaito. He comes to an abandoned military base where a different POG Giver gives Cubic a math puzzle t…

Kaito becomes angry when he notices Rook to have done something to Cubic. He and Nonoha go to one of Rook's old living quarters, where they learn of Rook's disturbing childhood. After hearing from Nonoha about some ruins where Kaito and Ro…

With the planes back to Japan allegedly taken over by the POG, Kaito and the others travel to Venice instead. As Souji goes to see Rook concerning the Phi Brain project, Gammon deduces that their transfer to Italy was the work of the POG a…

As Kaito and the others return to Japan, they find the principal, Baron Kaido, has gone missing. Later on, Kaito is summoned by the POG to the place where his parents died. As Kaito and the others arrive at the location and find Baron, Kai…

Following the incident, Cubic and Ana start avoiding Kaito, believing they can no longer follow him, much to the dismay of Nonoha. Meanwhile, Gammon, who is contemplating whether he should become a Giver, becomes concerned that the POG may…

Kaito is visited by Gammon's little sister, Miharu, who is worried that she hasn't heard from Gammon. Meanwhile, Gammon arrives at the POG headquarters and is challenged by the Givers to earn the right to see Rook. He is eventually challen…

As Miharu has dinner with Nonoha, Kaito faces a deadly puzzle against Gammon, who seeks something known as The God Scrolls in order to complete the Puzzle of God. As Kaito nears the end of the puzzle, he sees a vision in which his friends …

As Kaito experiences strange occurrences in which he loses focus of everything else when he glances at puzzles, Cubic reveals this is the result of Kaito's brain speed reaching abnormal levels, advising him not to solve puzzles anymore. As…

After finding Jin a complete wreck, Baron explains to Gammon about how POG's leader, Count Pythagoras, intends to bring about a conflict between Kaito and Rook in order to open the gate to the Puzzle of God, while Kaito reads up on what Cu…

After Kaito's encounter with Rook, he goes to see Ana, whose drawings and paintings resemble his visions, explaining that the future is yet to be determined. The next day, Gammon challenges Kaito to a final puzzle in which they must climb …

As the POG breaks apart following Rook's outburst, Kaito is contacted by Rook, who asks to spend some time with him in a surprisingly friendly manner. After a seemingly normal day of hanging out together, Rook challenges Kaito to a fight t…

Rook presents a solar system based puzzle where, if Kaito reaches the Sun, Rook would fall to his death, with Rook simplifying the puzzle to make it easy for Kaito to solve. Kaito, looking for a way to solve the puzzle while saving Rook, r…