Choose a sort order for lists in Japanese
You can sort items in the Finder by name. When you choose a language for your Mac, the sort order for names is automatically set. If you include Japanese in your preferred languages, several sort orders are available.
Choose Apple menu > System Preferences, click Language & Region, then verify that Japanese is listed under “Preferred languages.” If not, you can enable Japanese input modes.
Click the “List sort order” pop-up menu, then choose a sort order.
Japanese: Japanese Industrial Standard sort order.
Japanese (Radical-Stroke Sort Order): Organized by radical sort order, then stroke count.