Department stores and shopping malls in Japan are increasingly setting up prayer rooms to meet the need for Muslims amid a growing number of visitors from Islamic countries on the back of a weak yen. At the Matsuya Ginza department store in Tokyo’s upscale shopping district, a number of people lined up in front of a room designated as a “prayer room” at certain times of the day. The room is equipped with a foot-washing area for cleansing parts of the body before worship and has mats for several people to offer prayers. A Malaysian woman in her 30s said she had searched for a prayer room online…