D.I.System Co., Ltd.
4421・Standard Market・Information & Communication
Business
D.I.System Co., Ltd. is an independent information services company founded in 1997, comprising the Company and three consolidated subsidiaries. In its core System Integration business, the Company provides one-stop services spanning business application design and development, infrastructure system design and construction, and operation and maintenance support to a wide range of industries, including IT/telecommunications, finance, distribution, healthcare, and government agencies. In the Education Services & Security Solutions business, the Company offers IT reskilling training based on in-house developed products, along with the security product "WEEDS Trace" for financial institutions. Consolidated net sales for FY2025 (ending September 2025) were ¥7,222 million. Following its listing on the TSE JASDAQ market in 2019, the Company relocated its head office to Marunouchi, Chiyoda-ku, Tokyo in April 2025, strengthening its management foundation.
Business Model
The SI business, which accounts for roughly 90% of sales, generates revenue through two forms: client-site staffing under dispatch/quasi-delegation contracts, and contract-based (outsourced) development. While operation & maintenance work forms stable, stock-type recurring revenue, strengthened web marketing has helped win more prime-contractor projects, contributing to improved profitability. In the Education Services & Security Solutions business, in-house developed training programs and license sales of WEEDS Trace have built a high-margin model that does not depend on engineer headcount.
Company Strengths
By leveraging its strength as an independent player not tied to specific vendors, the company serves a broad range of industries including IT/telecommunications, finance, distribution, healthcare, and government. It can offer optimal proposals ranging from scratch development to package utilization according to customers' investment budgets, user scale, and desired delivery timelines. In FY2025 (ended September 2025), sales of the System Integration business reached ¥6,497 million.
The Education Services & Security Solutions business is built on proprietary in-house developed products, achieving a high segment profit margin of approximately 32.6% in FY2025 (ended September 2025) (profit of ¥260 million on sales of ¥797 million). Order intake grew 39.4% year on year to ¥804 million, and the order backlog surged 146.68% year on year, suggesting future contribution to sales.
Training know-how accumulated through the education services provided by consolidated subsidiary Athree Brains is also applied to internal talent development. In FY2025 (ended September 2025), the company recruited 76 people in total, comprising 45 new graduates and 31 mid-career hires. A quality management framework has also been established through certifications such as ISMS, ISO9001, and the Privacy Mark.
ENVALITH's Perspective
Performance Trend
Revenue rose for five consecutive periods: ¥4,656 million in FY2021 → ¥5,498 million in FY2022 → ¥6,241 million in FY2023 → ¥6,831 million in FY2024 → ¥7,223 million in FY2025. The uptrend continued into the first half of FY2026 (ending September 2026), with revenue of ¥3,603 million (up 6.1% year on year). On the profit side, however, results declined sharply, with first-half operating profit of ¥160 million (down 25.3% year on year) and net income attributable to owners of the parent for the first half of ¥104 million (down 29.4% year on year). The main causes were growth investments—including improved employee benefits, expansion of the Osaka office floor space, relocation of the head office, enhancement of internal IT environment, and M&A-related expenses—which pushed up SG&A expenses. In terms of the external environment, demand for DX promotion remains robust, and expansion of the information and communications market (up 7.9% year on year in January 2026) is providing a tailwind, but absorbing the cost increases remains a near-term challenge. The full-year forecast is unchanged, with revenue of ¥7,952 million (up 10.1% year on year) and operating profit of ¥381 million (up 7.0% year on year).
Growth Strategy
Toward Vision2028 (revenue of ¥10,000 million, operating profit of ¥1,000 million), the company is advancing M&A, AI initiatives, and Western Japan expansion
Actively promoting expansion of prime-contractor and subcontracted projects, resolution of client companies' security challenges, and development of generative AI utilization technologies. Full-year forecast for FY2026 (ending September 2026) remains unchanged at revenue of ¥7,952 million and operating profit of ¥381 million.
In January 2026, made M.I.C Co., Ltd. (Yamaguchi Prefecture / Hiroshima Prefecture) a wholly owned subsidiary for ¥200 million. Mutual revenue growth is expected through collaboration across the Kansai, Sanyo, and Kyushu regions. Goodwill of ¥79 million arose, to be amortized on a straight-line basis over 10 years.
Began offering "Pigetore," an education platform combining professional instructors with always-available AI support, from April 2026. Plans call for improving AI technology precision and expanding curricula optimized for career development steps, with technical synergies also expected for the SI business.
An integrated cybersecurity platform launched in December 2025. It has strengths in ransomware countermeasures and has attracted numerous inquiries immediately after launch. The number of contracted licenses is trending steadily upward.
Revenue of ¥10,000 million and operating profit of ¥1,000 million have been set as medium- to long-term targets. The policy is to continue expanding business locations nationwide, strengthening project manager development and consulting capabilities, and utilizing M&A.
Last updated: July 17, 2026