Japanese residents trading FX or CFDs through an FSA-licensed broker should not expect deposit bonuses, no-deposit credit, cashback or similar cash inducements. Conduct rules under the Financial Instruments and Exchange Act, reinforced by the FFAJ's standards, mean licensed brokers do not offer the welcome promotions seen in unregulated markets. The same framework caps retail FX leverage at 25:1 and requires strict segregation of client money.
Where you do see incentives in Japan, they tend to be modest and structured around activity rather than a cash gift. Some brokers run campaigns tied to trading volume or points-style rewards, but these sit a long way from the large deposit-match offers found elsewhere, and they are framed to fit the FFAJ's advertising and fairness rules.
The restriction is rooted in FX and leveraged derivatives. It does not directly govern, for example, a stock-trading or crypto-exchange promotion offered outside the leveraged-FX framework. Where this page surfaces such an offer for Japan, it falls outside the FSA's retail-FX conduct rules rather than challenging them.