Chiba regional growth company with in-house web production, SEO and advertising teams
About Onion Shimbunsha
Onion Shimbunsha (株式会社オニオン新聞社, Onionnews Inc.) is a company in Chiba City, founded in November 1991. Its office is on the fourth floor of the Konan Asset Chiba Chuo Building in Sakaecho, Chuo ward. It had 69 staff in April 2026, counting officers and part-time workers. Its capital is 120 million yen, and a Chiba Bank affiliate holds 20 percent of the shares. Kan Yamamoto has been president and representative director since August 2011. The board also includes executive vice president Kazuhisa Otsuka and sales director Mitsuru Endo.
The company's business is 'growth support', and it runs three divisions. The project division works with local governments, entrepreneurs and new product launches. The D2C division handles product planning, brand building, online stores, logistics and pop-up events. The digital marketing division covers web production, web advertising, SEO, UI and UX improvement, social media, video, system development, a store-portal CMS and call tracking. Its team includes producers, directors, designers, ad operators, SEO directors and front-end and back-end engineers. A subscription service called onion Digisapo offers an outsourced web marketing team for about the cost of one employee.
The SEO service follows four steps. First, it analyses competitor sites for traffic, content volume and inbound keywords, then runs the same review on the client's own site. Next comes needs analysis, covering personas, keyword research, gap analysis and content design. Finally the team writes article briefs and the content itself. On-page work covers titles, meta descriptions, headings, URL structure and site hierarchy. Heatmaps and A/B tests belong to the separate UI and UX service. Web production follows a six-step build process with keyword research, meta tags and responsive design. The company has completed more than 2,000 production projects.
The company has no medical, clinic or dental pages, and no published dental clients or results. Its projects include regional brands, a Chiba entrepreneur programme and retail work with the JR Group and the Mitsukoshi Isetan Group. Its ONION CMS for chain stores includes area SEO and booking management, which may suit a dental group with several branches.
No prices are published. The engagement runs from enquiry and a hearing, through competitor and site analysis, to a proposal and then production. Performance reports and consulting are available on request. A free website diagnosis compares a client's site with named competitors and turns the gaps into action items. A Chiba dental clinic would get a locally rooted, well-staffed team, but not one with published healthcare experience.
Onion Shimbunsha's Website
Onion Shimbunsha at a Glance
| Founded | 1991 |
|---|---|
| Team size | 69 employees (April 2026, including part-time) |
| Headquarters | Chiba (Chuo-ku), Chiba Prefecture, Japan |
| Leadership | Kan Yamamoto (President and Representative Director); Kazuhisa Otsuka (Executive Vice President, Director); Mitsuru Endo (Director, Sales Manager) |
| Languages | Japanese |
| Pricing | No prices published. Free website diagnosis. onion Digisapo outsourced team offered at roughly the cost of one employee. |
| Contracts & reporting | Process: enquiry, hearing, competitor and own-site analysis, content design, proposal, production, then service start. Performance reports and consulting on request. |
| Tools & partnerships | Google Ads; Yahoo! JAPAN Ads; Meta; X; LINE Ads Platform; YouTube; Shopify; HubSpot; ONION CMS; call tracking; heatmaps |
Dental Marketing Services
- No dental-specific services. General services: SEO with competitor and own-site analysis, personas, keyword and gap analysis, content briefs and writing
- on-page optimisation
- web production
- UI/UX improvement with heatmaps and A/B tests
- web advertising
- social media
- video
- call tracking
- free website diagnosis
Why Dentists Choose Onion Shimbunsha
- Dedicated SEO team
- Competitor analysis first
- Content designed around findings
- Central Chiba office
- Marketing and production together
Key Strengths
- Sets patient personas and runs keyword gap analysis before planning practice content
- Writes detailed briefs for each treatment article before production starts
- Optimises titles, meta descriptions, headings and URL structure on practice websites
- Uses heatmap analysis and A/B testing to make practice websites easier for patients
How the DSA Score Breaks Down
Points earned: 16.8 of 100 (profile 21 × 0.8 + client feedback 0). DSA Score: 83/100
Where Onion Shimbunsha Is Listed
Questions Dentists Ask About Onion Shimbunsha
Does Onion Shimbunsha have dental marketing experience?
No dental or medical pages, clients or results are published. Their SEO and web services are aimed at small and mid-sized businesses in general.
How does their SEO process work?
They analyse competitor sites and then the client's own site. Next comes needs analysis with personas, keyword research and gap analysis. Finally they write article briefs and content.
Do they build websites as well as SEO?
Yes. Web production, UI/UX improvement and SEO are handled in house. The company has completed more than 2,000 production projects.
What does it cost?
No prices are published. They offer a free website diagnosis that compares your site with competitors and lists concrete measures.
How large is the company?
They had 69 staff in April 2026, including officers and part-time workers. The company was founded in November 1991.
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