Can I buy ETF on Rakuten?

Hello there, I'm curious about the possibility of purchasing an Exchange-Traded Fund (ETF) related to Rakuten. Could you please clarify if it's possible to buy such an ETF and if so, where would be the best place to go about it? I've heard some buzz about the company and its performance in the market, and I'm considering diversifying my portfolio with this potential investment option. Additionally, I'd appreciate any insights or recommendations you might have on evaluating the risks and potential returns associated with such an investment. Thank you in advance for your help!