ファイ・ブレイン 〜神のパズル 宿敵！レイツェル編

Kaito Daimon takes the Orpheus armband to England with Nonoha Itou and the other Solvers, chasing a way to give a friend back the memories he lost. Under a church they find a maze built to be walked rather than read, and a girl who calls herself Raetsel is already inside it. She leaves with one of them, and the traps start closing. This third season runs twenty-five episodes of the same life-or-death puzzles the Solvers have been handed since P.O.G. first set one in front of Kaito.