ChatGPT answers in Japanese draw on a completely different source ecosystem than your English SEO has built.
If your Japanese digital presence consists of a translated website and a few directory listings, you are structurally absent from the Japanese-language information ecosystem that ChatGPT's training data and browsing mode rely on. Japanese-language authoritative publications, industry databases, structured Japanese-language content, and Japanese-language Bing index coverage are all distinct requirements — none of them satisfied by English-language SEO work alone.