Watch Phi-Brain

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 ran for 3 seasons (76 episodes) between October 2, 2011 and on Anime Network