Japanese people have various identities and ways to buy tickets, such as membership, selling tickets round after round, and drawing lots to grab them. But overseas ones are separate. General information goes to official website first. If there is an overseas official website, overseas air tickets are also on it. Just register information in overseas official website, have a good idea, have fun and buy it on a computer with better network speed. So far, it has not failed.
Best of all, the tickets for foreigners are excellent.
There is also asking friends in Japan, or friends you know, to help buy them in Japan. In addition to normal tickets, Japan also has a second-hand ticket trading website, which is really not so good, but it will cost more money to solve it.
Of course, each group's website may have a different system for eating out. You can visit official website by yourself, or ask in the rice circle.
If you need Japanese help, you can call me again. I hope this helps.