Phi-Brain ~ Puzzle of God: The Orpheus Order

Phi-Brain: Puzzle of God - The Orpheus Order is the second season of the puzzle-battle anime produced by Sunrise. It follows Kaito Daimon, a high school student at Root Academy with a remarkable talent for solving puzzles, who was drawn into a dangerous game against POG, a secret organization that creates Philosopher's Puzzles, deadly traps where failure can cost the solver dearly. With the help of his friends, including his childhood friend Nonoha Itou, the young genius Cubic Galois, the hot-blooded Gammon Akabane and the artistic Ana Gram, Kaito has fought his way toward the legendary Puzzle of God.

Now the puzzles get tougher and even more deadly as Kaito continues his battle against the power-hungry Givers of POG and the shadowy group known as the Orpheus Order. With one of his teammates already switching sides, Kaito must keep solving the lethal traps placed before him while holding his team together. The greatest question is not only whether he can reach the fabled Puzzle of God, but whether he can solve its puzzles and keep his sanity at the same time.