Phi Brain: Kami no Puzzle - Shukuteki! Rätsel-hen  

Phi Brain: Puzzle of God 3, Phi Brain: Kami no Puzzle Dai 3, Phi Brain: Kami no Puzzle Third Season, Phi Brain: Kami no Puzzle 3rd Season, Phi Brain: Puzzle of God - Nemesis! Raetsel-hen, ファイ・ブレイン 〜神のパズル 宿敵！レイツェル編, Phi Brain: Kami no Puzzle 3

Is puzzles truly important in today's world? To retrieve Jins memories, Kaito and his companions embark on a quest to view puzzles in England. While exploring an underground maze beneath a church where Jin first met Rook, they encounter a mysterious girl named "Raetsel." Despite appearing familiar with each other, she vanishes along with Jin. Suddenly, the traps within the maze activate and pursue Kaito and his friends.