The requirements for foreign nationals seeking business manager visas will become stricter starting next Thursday, including requiring visa applicants to have ¥30 million ($197,000) in capital, up from the current ¥5 million, the Immigration Services Agency (ISA) said Friday. There has been a rapid rise in the number of business manager visa holders in recent years, triggering concerns that some are using it as an easy route to long-term residency rather than for genuine entrepreneurship.