South Korean currency depreciated on Thursday recording its biggest drop in more than a week after demand for riskier assets was reduced amid concerns about weaker global economic recovery, while government bonds increased. The Won declined by 0.5% to 1,123.69 per U.S. dollar in Seoul, the largest fall since April 8, while yields on South Korean 2.75% government bonds due March 2018 fell 0.03 percentage points to 2.66%.