In shogi, Waki System (脇システム waki shisutemu) is a symmetrical Double Fortress (Static Rook) opening.
An early ...P-74 (as opposed to an early ...G-52) is the most common move leading to the standard 24-Move Fortress Set (矢倉24手組) position, which is one of the major branching points of the set of Fortress substrategies.
The Waki System is a silver-37 branch Fortress substrategy.
The Waki System form starts with White moving their bishop to 64 temporarily pinning Black's silver to their rook.
This positioning allows the bishops to be traded off in order to place them in hand.