TERRAISE Inc. (Headquarters: Shibuya-ku, Tokyo; CEO: Ryosuke Funahashi) is providing "AI Advisor," a retainer service for management that allows companies to secure AI expertise as needed without hiring a full-time CAIO (Chief AI Officer). While major domestic companies are increasingly appointing CAIOs from 2025 to 2026, only 4% of Japanese companies overall have dedicated CAIOs, with 41% of AI initiatives being concurrently managed by CDOs (Chief Digital Officers). TERRAISE offers a new option for mid-sized and growing companies unable to commit to full-time hires: the "Fractional CAIO" model, which is gaining traction in the United States. "We know we need to advance AI, but we don't have anyone internally to lead the charge." Many executives are quietly grappling with this dilemma. They've issued directives. They've signed contracts for tools. Yet, the organization doesn't move. They don't know where to start or who to assign the task to. Hiring a dedicated executive with AI expertise is challenging, as such individuals are scarce in the market, and even if found, their cost may not be justifiable. "AI Advisor" is a service designed to fill this "lack of a leader" by working alongside company executives. Background 1: Only 4% of Japanese Companies Have Dedicated CAIOs; 41% Rely on CDO "Concurrent Roles" According to a survey by the CDO Club Japan (published November 2025), approximately 90% of Japanese corporate management places importance on AI, and about 71% of those responsible for AI promotion report directly to the CEO. This indicates AI is positioned as a strategic management agenda. However, only 4% of companies have appointed a dedicated CAIO, with the most common arrangement being concurrent responsibility by a CDO (Chief Digital/Data Officer) for AI promotion (41%). Approximately 66.6% of companies view AI as "part of their DX strategy," forming a unique Japanese model of "CDO concurrent roles." This situation stems from a structural shortage of AI ta