Grumpy Old Geeks Companies Muji Company Muji 4 mentions in 1 episode Muji is a store the speakers discuss for its pens, notebooks and other unbranded goods. Mentions 07: Must learn balance Daniel-san! May 6, 2013 41:54 an unbelievably awesome store called Muji 42:23 an unbelievably awesome store called Muji 43:01 he took me to this beautiful store down in Soma, the Muji store 43:50 the basic black Muji pen. I got the 0.38