JIA Securities charges commissions based on the trading value, starting from 1.15% for shares under 1,000,000 yen and decreasing as the value increases. For bonds, commissions are also tiered depending on the value of the transaction. However, there are no indications of hidden fees for these transactions. Despite the clarity on commission rates, the lack of details about withdrawal and deposit fees is a concern. If you're considering opening a wk account, I suggest reading WK reviews to confirm whether other users have encountered unexpected charges.