Which luxury sedan's counerpart is called the Master?
Toyopet Master:  It was sold at a chain of Toyota Japan dealerships called "Toyota Store", next to the more upscale Crown, which was intended as a private purchase alternative to the Master. Toyota Crown: The Toyota Crown (Japanese: トヨタクラウン "Toyota Kuraun") is a line of full-size luxury sedans by Toyota primarily aimed at the Japanese market and sold in other select Asian markets.
Toyota Crown