Ep 11. The Queen Strikes Back!

The Queen Strikes Back! is the eleventh episode of Phi-Brain season 1. This episode follows the continuation of the Orpheus Order's attack on the Puzzle Research Club and Kaito's friends. The episode begins with Kaito and Rook conversing over their next moves to defeat the Orpheus Order and specifically their leader, the mysterious woman known as Queen.

Meanwhile, the Puzzle Research Club is in peril as Cubic has been kidnapped by the Orpheus Order and Nonoha's father has been hospitalized due to the shock he received from the previous attack by the order. Kaito and Rook decide to sneak into the Orpheus Order's base to rescue Cubic. But the two are caught by a new member of the Orpheus Order, who uses a dangerous puzzle to trap them.

As the two puzzle solvers try to figure out the mystery behind the puzzle, the Queen reveals herself and challenges Kaito to a life or death game. Kaito, realizing the danger of the situation, accepts her challenge, but Rook is hesitant about letting their friend risk his life.

As Kaito faces off against the Queen, she reveals that she has been watching Kaito's progress closely and has even created puzzles designed specifically for him. The Queen's puzzles prove to be difficult, and Kaito must use all of his puzzle-solving skills to overcome her.

During their intense battle, the Queen uncovers Kaito's greatest weakness and uses it to her advantage. But Kaito doesn't give up easily, and with the help of Nonoha, Rook, and Cubic, Kaito manages to turn the game around and win against the Queen.

However, the Queen does not seem to be deterred by her defeat, and instead tells Kaito that she will continue to pursue him and his friends. The episode ends with Kaito and his friends exhausted but relieved that they managed to survive the Queen's game.

Overall, The Queen Strikes Back! is a thrilling episode that highlights Kaito's skills as a puzzle solver and the dangers he faces as he tries to take down the Orpheus Order. The tension and suspense build throughout the episode, and viewers are sure to be on the edge of their seats as they watch Kaito face off against the Queen. The episode also introduces new characters and puzzles, making it a must-watch for fans of the series.