Sui-sei's 'Jirei no Pro' Exceeds 200 Client Companies, Maximizing B2B Marketing with Case Studies
Sui-sei Co., Ltd.'s 'Jirei no Pro' (Case Study Pro) service, which maximizes B2B marketing through case studies, has surpassed 200 client companies as of April 2026. The service leverages AI and BPO to enhance the productivity of marketing activities.
📋 Article Processing Timeline
- 📰 Published: April 30, 2026 at 21:00
- 🔍 Collected: April 30, 2026 at 12:31
- 🤖 AI Analyzed: April 30, 2026 at 12:38 (6 min after Collected)
Sui-sei Co., Ltd. (Headquarters: Shinagawa-ku, Tokyo; Representative Director: Yukiya Matsumura), which strives to improve the productivity of marketing activities centered on "AI x BPO," announces that the cumulative number of client companies for its case study production service, 'Jirei no Pro,' has exceeded 200 as of April 2026.
■ Three Reasons Why B2B Companies Emphasize Case Studies Now, as Seen from 200 Client Successes
Among B2B products and services, "case studies" are not just reliable sources of information but have become "important assets that support corporate growth." Through supporting over 200 companies, we have identified the following three points regarding "the ideal form of case studies demanded today."
1. "Unique Experiences" Stand Out Precisely Because of the AI Era
In an era where AI can instantly generate similar texts, "unique experiences" that cannot be imitated, such as "challenges before service adoption" and "changes after adoption" as told by actual customers, become powerful content that highlights differentiation from competitors.
2. Accumulation of "Success Know-how" Usable in Various Situations
Fewer companies now consider case studies as "just something to put on a website." There is a growing trend to utilize information gained from a single interview as a reliable source that can be reused in various situations, such as sales materials, videos, exhibition flyers, and even internal training materials.
3. A Powerful Ally for Sales that Boosts Deal Closing Rates
Case studies are more than just marketing assets; they are weapons that support the sales floor. By being able to quickly present case studies tailored to the customer's industry and challenges, concerns of potential customers can be resolved on the spot.
Meanwhile, many companies struggle with disseminating information due to a lack of production resources and know-how. 'Jirei no Pro' solves these challenges through "high-quality interviews by professionals" and "efficiency in the production process through AI," supporting the production systems of over 200 client companies.
◾️ Implementation Results
[Case Study: RevenueCat, Inc.]
The strongest ally for foreign SaaS x elite marketers! What did RevenueCat seek in a case study content production partner?
Challenge before adoption: The case study production system was undeveloped, and customer success stories could not be articulated.
Effect after adoption: High-quality case studies were efficiently mass-produced, contributing to increased recognition and trust.
Article URL: https://jireinopro.sui-sei.tokyo/posts/revenuecat
[Case Study: Dr. Mate Co., Ltd.]
Aiming for "nationwide coverage" of case studies. The strategy Dr. Mate envisions with 'Jirei no Pro' to maximize the "power of word-of-mouth" in the nursing care industry.
Challenge before adoption: Due to a lack of internal resources, case study interviews and production were postponed.
Effect after adoption: Case studies could be steadily expanded, contributing to improved service reliability.
Article URL: https://jireinopro.sui-sei.tokyo/posts/doctormate
About Sui-sei Co., Ltd.
Company Name: Sui-sei Co., Ltd.
Location: Shinagawa-ku, Tokyo
Representative: Yukiya Hotta
Established: September 2024
Business Activities: Case study production and recruitment public relations support business through AI x BPO
Official Website: https://sui-sei.tokyo/
Jirei no Pro: https://jireinopro.sui-sei.tokyo
Saiyo Koho no Pro: https://saiyokohonopuro.sui-sei.tokyo/
Contact for this matter
Sui-sei Co., Ltd. Public Relations
E-mail: info@sui-sei.tokyo
■ Three Reasons Why B2B Companies Emphasize Case Studies Now, as Seen from 200 Client Successes
Among B2B products and services, "case studies" are not just reliable sources of information but have become "important assets that support corporate growth." Through supporting over 200 companies, we have identified the following three points regarding "the ideal form of case studies demanded today."
1. "Unique Experiences" Stand Out Precisely Because of the AI Era
In an era where AI can instantly generate similar texts, "unique experiences" that cannot be imitated, such as "challenges before service adoption" and "changes after adoption" as told by actual customers, become powerful content that highlights differentiation from competitors.
2. Accumulation of "Success Know-how" Usable in Various Situations
Fewer companies now consider case studies as "just something to put on a website." There is a growing trend to utilize information gained from a single interview as a reliable source that can be reused in various situations, such as sales materials, videos, exhibition flyers, and even internal training materials.
3. A Powerful Ally for Sales that Boosts Deal Closing Rates
Case studies are more than just marketing assets; they are weapons that support the sales floor. By being able to quickly present case studies tailored to the customer's industry and challenges, concerns of potential customers can be resolved on the spot.
Meanwhile, many companies struggle with disseminating information due to a lack of production resources and know-how. 'Jirei no Pro' solves these challenges through "high-quality interviews by professionals" and "efficiency in the production process through AI," supporting the production systems of over 200 client companies.
◾️ Implementation Results
[Case Study: RevenueCat, Inc.]
The strongest ally for foreign SaaS x elite marketers! What did RevenueCat seek in a case study content production partner?
Challenge before adoption: The case study production system was undeveloped, and customer success stories could not be articulated.
Effect after adoption: High-quality case studies were efficiently mass-produced, contributing to increased recognition and trust.
Article URL: https://jireinopro.sui-sei.tokyo/posts/revenuecat
[Case Study: Dr. Mate Co., Ltd.]
Aiming for "nationwide coverage" of case studies. The strategy Dr. Mate envisions with 'Jirei no Pro' to maximize the "power of word-of-mouth" in the nursing care industry.
Challenge before adoption: Due to a lack of internal resources, case study interviews and production were postponed.
Effect after adoption: Case studies could be steadily expanded, contributing to improved service reliability.
Article URL: https://jireinopro.sui-sei.tokyo/posts/doctormate
About Sui-sei Co., Ltd.
Company Name: Sui-sei Co., Ltd.
Location: Shinagawa-ku, Tokyo
Representative: Yukiya Hotta
Established: September 2024
Business Activities: Case study production and recruitment public relations support business through AI x BPO
Official Website: https://sui-sei.tokyo/
Jirei no Pro: https://jireinopro.sui-sei.tokyo
Saiyo Koho no Pro: https://saiyokohonopuro.sui-sei.tokyo/
Contact for this matter
Sui-sei Co., Ltd. Public Relations
E-mail: info@sui-sei.tokyo