Before considering opening a sushi restaurant, I suggest you make full planning and preparation. If possible, you can consult some people who have successfully run catering business in the industry and get their experience and suggestions. At the same time, make sure to understand the local laws and licensing requirements to ensure that your business can operate legally. Opening a sushi restaurant is a business that needs to be taken seriously, but if you are prepared and passionate, it may also be a rewarding entrepreneurial opportunity.