As an AI language model, I do not have access to Warren Buffet's thoughts or investment strategies. However, based on his previous investments in Japan, we can make some educated guesses about the types of companies that he might be interested in.
Historically, Warren Buffet has shown a preference for investing in companies with strong brand recognition, consistent earnings growth, and a competitive advantage in their industry. He has also expressed an interest in companies with a long-term perspective on business strategy and a commitment to ethical and responsible practices.
Some of the industries that Buffet has invested in previously include consumer goods, financial services, and technology. Some potential companies in these industries that might fit his investment criteria could include Toyota, Sony, Mitsubishi UFJ Financial Group, and SoftBank. However, it's important to note that these are just speculative examples and there is no guarantee that Buffet will invest in any of these companies.