Fast Retailing shares are tanking in Tokyo one day after the company reported disappointing December comps at its Uniqlo chain in Japan. Uniqlo’s sales in December fell 5 percent.

Shares in Asia’s largest apparel retailer are down 6.7 percent in afternoon trade, hovering around 39,720 yen. The Nikkei 225 index is down just 0.4 percent while Shanghai’s SSE is down 0.35 percent. Hong Kong’s Hang Seng is nearly flat.

Comparatively speaking, other Japanese retailers are faring better on Friday. Isetan Mitsukoshi is down 0.2 percent while Takashimaya is down just 0.1 percent. Isetan’s December comps fell 1.9 percent while Takashimaya saw an increase of 0.5 percent.

Shimamura, a discount retailer that reported a 4.4 percent drop in December comps, is actually gaining 0.7 percent.

Fast Retailing said Thursday that same-store sales at its Uniqlo outlets in Japan decreased by 5 percent in December. Customer numbers were down 4 percent, while the average purchase per customer slipped by 1 percent.

“Same-store sales declined year-on-year in December after warm weather in the latter part of the month dampened sales of core winter items,” the retailer said.