[Case Study] Marketing AI OS "ENSOR" adopted by Nextbeat Co., Ltd. — building a company-wide system to mass-produce ad creative and run video A/B tests while protecting the brand

REHATCH Inc. is pleased to announce that it has deployed Marketing AI OS "ENSOR" at Nextbeat Co., Ltd., a company that operates multiple services in the HR domain.

— "Don't fall behind the evolution of AI": why Nextbeat, facing a depletion of creative resources, chose ENSOR as a company-wide infrastructure —

Company Profile

Nextbeat Co., Ltd. addresses the social issues spreading across many areas alongside population decline, operating career-change support services for specialized professionals, business support systems, and media businesses, such as Hoikushi Bank! and Omotenashi HR.

Background to Adoption

Ahead of an organizational overhaul in April 2026, radically accelerating the PDCA cycle for ad creative had become the marketing team's top priority. As the accuracy and speed of AI-driven creative generation improved rapidly, the question of "how to incorporate this evolution" grew within the organization, and the time had come to consider a serious investment in an external tool. At the same time, the concentration of work on a dedicated creator was approaching its limit, compounding the real-world challenge of resource depletion.

Behind the decision to invest in a system rather than hiring were expectations for scalability that could be deployed across multiple products, and a focus on ROI relative to personnel costs.

Challenges Before Adoption

• A dedicated designer was swamped with 0-to-1 banner production work, and resources were chronically stretched thin
• There was no capacity to test video creative on Meta ads, and lost opportunities were piling up
• There was no system for mass production while maintaining the tone and manner of multiple brands, such as Hoikushi Bank! and Omotenashi HR
• Marketers could not get involved in production, and dependence on a single creator persisted

Why They Chose ENSOR

The deciding factor was a capability demonstrated in the demo: the ability to encode brand guidelines into Skills. By setting the art-direction rules specific to Hoikushi Bank! (designated fonts, color scheme, enclosing information in rounded-corner bubbles, a ban on using black, and so on) as ENSOR skills, the demo proved that no brand damage would occur even when marketers generated creative themselves. Being able to ensure brand quality (defense) while simultaneously turning still images into video and mass-producing a large volume of A/B tests (offense) became the key reason for adoption.

Expectations and Goals After Adoption

Positioning ENSOR as a "company-wide creative infrastructure," Nextbeat aims to deploy it across multiple products, starting with Hoikushi Bank!. By entrusting the routine production that designers used to handle to AI and building a system in which marketers can autonomously mass-produce and test creative, the near-term goal is to begin running video A/B tests on Meta ads in earnest.

Comment from the Person in Charge

"By accumulating our own brand rules in ENSOR's skills, we want to build a system where quality is maintained even when marketers create the work. While establishing winning patterns with Hoikushi Bank!, we are already moving forward on the premise of expanding to multiple brands, starting with Omotenashi HR." (Takeda, GM, Nextbeat Co., Ltd.)

* This case study is based on information as of May 2026.

About ENSOR

ENSOR is an AI creative generation platform for marketers, built on the concept of "AI that mass-produces winning banners — a marketing OS that keeps learning." It executes everything from creative planning to integration and generation in 1/5 of the conventional time.

About REHATCH Inc.

Media inquiries

REHATCH Inc. PR
E-mail: sdt@re-hatch.jp
TEL: 03-5846-9184

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