Yumi Life Group's marukan Co., Ltd. is promoting the creation of systems that allow anyone to build high-quality structures, thereby protecting owners' valuable assets. The construction industry faces challenges such as restrictions on overtime work (the 2024 problem), severe labor shortages, and a personalized system where construction quality depends on the experience and intuition of craftsmen and site supervisors. The company is converting the wisdom and skills cultivated by craftsmen into systems that anyone can replicate, promoting the standardization and quantification of construction processes. By utilizing AI and DX as means to achieve this, they are realizing high-quality construction that does not rely on experience or intuition, while also creating an environment where women and inexperienced individuals can thrive. Challenges of "Relying on Experience (Gray Zone)" Remaining in the Construction Industry For many years, the quality of construction sites has been supported by the "rules of thumb" of craftsmen and site supervisors, and the culture of "on-site adjustments" where materials are processed on the spot to fit site dimensions. However, such personalization, along with associated waiting times and rework (corrections), significantly reduces the productivity of the entire industry. In fact, according to data from the Japan Productivity Center, the hourly labor productivity in Japan's construction industry (approximately 2,700 yen) is about half that of the average for all industries (approximately 5,700 yen), and the inefficient system compared to other industries has been a concern. In response to this background, marukan's Director Nishiyama has a strong sense of mission: "When entrusted with valuable assets of 100 or 200 million yen from owners, we must be able to guarantee a certain level of quality regardless of who is in charge." With the awareness that "the reason young workers are not attracted is not a lack of people due to labor shortages,