Saishunkan System Co., Ltd.

Saishunkan System Co., Ltd. (再春館システム株式会社) is a Japanese information-technology and customer-relationship-management (CRM) solutions company headquartered in Takanawa, Minato-ku, Tokyo. It is a member of the Saishunkan Group, the corporate group centered on Saishunkan Pharmaceutical Co., Ltd. (株式会社再春館製薬所), the maker of the long-selling mail-order skincare brand Domohorn Wrinkle (ドモホルンリンクル). Saishunkan System was established on 26 February 1985 and is positioned as the group's IT arm, taking the retention-marketing and customer-satisfaction know-how cultivated in the Domohorn Wrinkle direct-marketing business and packaging it as services for other companies. The company's stated mission is to bring CRM to every business operator, with a focus on "retention marketing" — the idea that satisfying customers so thoroughly that they become repeat buyers and fans is the foundation of stable revenue. Its service portfolio spans mail-order/CRM support (EC site and website construction, one-to-one communication tools, call-center solutions), system integration (call-center systems, EC/mail-order/CRM systems, ERP introduction support, contract and SES-type system development, offshore development), infrastructure and security solutions (security consulting, security solutions, information-security services), overseas business, and business outsourcing. The company draws directly on its experience building and operating the contact centers, EC sites, CRM systems and back-end core systems of Saishunkan Pharmaceutical and Domohorn Wrinkle. Saishunkan System is a private company with stated capital of 48 million yen. Its representative director is Masaaki Nishikawa (西川 正明), with Kenichi Arima (有馬 健一) as Director and COO. The company reported 156 employees and revenue of 2.93 billion yen for the fiscal year ending March 2026. In addition to its Tokyo head office, it operates offices in Kansai (Osaka), Fukuoka and Kumamoto, and is affiliated with Saishunkan System Vietnam. Group companies listed alongside it include Saishunkan Pharmaceutical, Saishunkan "Anshin-Anzen" Research Institute, and Human Relation. The company holds a worker-dispatch license and PrivacyMark certification, and has been registered as a "Tokyo Sustainable Work Company" for its flexible-work initiatives. In recent years the company has expanded its technology partnerships and product offerings. It was promoted from the AWS Select Tier to the AWS Advanced Tier Services Partner in the AWS Partner Network, and it markets SHIORI, a paperless/office-efficiency solution that customer Artnature adopted, reportedly cutting 2,000 hours of administrative work in half a year. Its positioning is that of a "user-side" systems company — an IT vendor born inside a direct-marketing business — that combines solutions, consulting and business design to help clients build long-term customer relationships.

Saishunkan System Co., Ltd. was established on 26 February 1985 as a member of the Saishunkan Group, the corporate group built around Saishunkan Pharmaceutical Co., Ltd. and its flagship mail-order skincare brand Domohorn Wrinkle. The company's roots lie in the direct-marketing operations of Saishunkan Pharmaceutical: as the Domohorn Wrinkle business grew, the group accumulated deep experience in managing customer touchpoints, retention and repeat purchasing, and the systems and frameworks needed to support them. Rather than keeping that know-how internal, Saishunkan System was positioned to externalize it. As the company explains, the frameworks, know-how and system solutions cultivated in the Domohorn Wrinkle business are now deployed to companies at large, under the banner of bringing CRM to every business operator and focusing on "retention marketing." This makes Saishunkan System a "user-side" systems company — an IT vendor that grew up inside a direct-marketing business rather than a pure outside contractor. Over the decades the company built and operated a wide range of systems for Saishunkan Pharmaceutical and Domohorn Wrinkle, including contact centers, EC sites, CRM systems and back-end core business systems, handling everything from planning and design through development, operation and maintenance. It then turned these capabilities into service lines: mail-order/CRM support, system integration, infrastructure and security solutions, overseas business, and business outsourcing. Its service menu includes EC/mail-order/CRM consulting and operational support, one-to-one communication tools, call-center solutions, call-center and EC/mail-order/CRM system construction, ERP introduction support, contract and SES-type system development, offshore development, security consulting and information-security services. By the 2020s the company had established a multi-site structure with a Tokyo head office in Takanawa, Minato-ku, plus offices in Kansai (Osaka), Fukuoka and Kumamoto, and an affiliated entity, Saishunkan System Vietnam. It reported 156 employees and revenue of 2.93 billion yen for the fiscal year ending March 2026, with stated capital of 48 million yen. Its leadership includes Representative Director Masaaki Nishikawa and Director/COO Kenichi Arima. Group companies include Saishunkan Pharmaceutical, Saishunkan "Anshin-Anzen" Research Institute, and Human Relation. In recent years the company has emphasized technology partnerships and new products. It was promoted from the AWS Select Tier to the AWS Advanced Tier Services Partner in the AWS Partner Network, reflecting its cloud and systems-integration capabilities. It also markets SHIORI, a paperless/office-efficiency solution; customer Artnature adopted it and reportedly cut 2,000 hours of administrative work in half a year. The company has also been registered as a "Tokyo Sustainable Work Company" for initiatives such as reducing overtime, promoting telework, supporting side jobs and improving working conditions.

• Saishunkan System Co., Ltd. established.

• Promoted from AWS Select Tier to AWS Advanced Tier Services Partner.

• Customer interview with Artnature published, describing SHIORI adoption and 2,000 hours of administrative work saved in half a year.

A user-side IT and CRM solutions company born inside the Saishunkan Group's direct-marketing business, offering retention-marketing know-how and total capability (solutions, consulting, business design) to all businesses.

• Mail-order/CRM support

  EC/mail-order/CRM consulting and operational support, one-to-one communication tools, call-center solutions.

• System integration

  Call-center system construction, EC/mail-order/CRM system construction, ERP introduction support, contract and SES-type development, offshore development.

• Infrastructure and security solutions

  Security consulting, security solutions and information-security services.

• SHIORI

  A paperless/office-efficiency solution; Artnature reportedly cut 2,000 hours of administrative work in half a year after adoption.

1. 1すべての事業者様にCRMをー。 | 再春館システム株式会社saishunkansys.com
2. 2会社概要 | 再春館システム株式会社saishunkansys.com
3. 3AWS「アドバンストティア サービスパートナー」に昇格しました。 | 再春館システム株式会社saishunkansys.com
4. 4ご利用者インタビュー公開：株式会社アートネイチャー様 | 再春館システム株式会社saishunkansys.com
5. 5Saishunkan System - Wikidatawikidata.org