What AI Overviews Mean for Marketing in Japan

Search in Japanese for almost any consumer category right now, and the top of the page is a Google AI Overview — often answering the question without sending the user on to any website at all. A September 2025 analysis by Values Inc and Note Inc found Japan's zero-click rate above 60%: 6.18 billion Google searches that month produced only 2.26 billion site visits. Most major markets are heading the same direction, but in Japan the shift is already very visible.

None of this displaces paid. Meta, LINE, Yahoo, and Google still do the work they've always done for awareness and conversion. AI Overviews are a separate visibility layer, increasingly shaping what people see while they research, compare, or decide — before they ever reach a paid touchpoint.

For brands marketing in Japan, what actually gets pulled into an AI Overview is substantive, well-structured, written for citation, and predominantly in Japanese. A few practical things move the needle here.

Substantive Japanese-language content under your own domain

Long-form pages — explainers, product mechanism breakdowns, founder essays, market analyses — written in Japanese and structured cleanly are the basic unit AI search pulls from. Translated versions of an existing English blog post rarely get cited.

Note as a second surface

Note (note.com) is Japan's dominant long-form publishing platform: well-indexed, citation-friendly, and entirely in Japanese, and an increasingly common source inside Overviews. For brands without an in-house Japanese editorial team, it's the lowest-friction way to put depth content in front of AI search.

Earned coverage in Japanese authority publications

Diamond Online, Toyo Keizai, Nikkei xTECH, Markezine, and category-specific titles add the kind of citable Japanese-language source AI Overviews tend to draw from. PR effort routed through those publications compounds AI-search visibility, not just brand awareness.

The entity layer

Japanese Wikipedia presence, a Google Knowledge Panel, structured data on your own pages, and consistent brand naming across Japanese sources all increase the chance an Overview attributes a claim to your brand correctly, rather than to a competitor.

Content built to answer a question

Most AI Overview answers respond to questions — "how does X work," "what is X best for," "X vs Y" — rather than to category or product-name searches. Content built to answer those questions directly is more citable than product or campaign copy.

If any of this is already on your roadmap, or you're trying to figure out where to start, always happy to compare notes.