Japan's Nikkei Stock Average plunged under 10,000 on Wednesday posting the biggest daily drop since November 1 on Fed decision. Nikkei 225 index tumbled 2.29% or 230.4 points and settled at 9,819.99. Clothing retailer Fast Retailing fell 5.7% after Credit Suisse Group said company's sales failed to rebound from the March 11 earthquake. Asahi Group Holdings advanced 2% after the brewer cancelled its pursuit of StarBev LP. Honda Motors dropped 3.1% on news car maker's sales in US sank 5% in March.