Mujirushi (no-brand) Ryōhin (quality goods) began as a product brand of the supermarket chain The Seiyu, Ltd. in December 1980.The Mujirushi Ryōhin product range was developed to offer cheap good quality products and were marketed using the slogan “Lower priced for a reason.” This is all managed through a “Pitch Camp” option, a base where you can. they’ll just as easily leave your side for good i. Aug 26, 2015….