Historical valuation data is not available at this time.
Green Monster Inc is a company listed on the Tokyo Stock Exchange under the ticker 157A.T. Limited publicly available information makes it difficult to provide a detailed business summary, including market position, core products/services, and competitive advantages. Further research into the company's financial reports or investor relations materials would be necessary to provide a comprehensive overview.
Due to the lack of verifiable public data on Green Monster Inc (157A.T), it is not possible to provide a detailed investment verdict. Investors should seek additional information from the company's official filings, investor presentations, or other reliable sources before making any investment decisions.