Internal affairs minister Hisayuki Fujii (center left) receives the second capital proposal from Fukuoka Gov. Seitaro Hattori (center right) in Tokyo on Oct. 5. | JIJI

The government of Prime Minister Sanae Takaichi approved an ordinance Tuesday that outlines requirements for becoming a designated secondary capital in the event of a large-scale natural disaster in the Kanto region, and is designed to address an overconcentration of population and resources in Tokyo.

Of the 47 prefectures, only Hokkaido, Aichi, Osaka and Fukuoka meet the necessary conditions.…