Japanese government formed a panel to discuss the possibility of SPAC in Japan. 

In order to encourage people to start businesses Japanese government formed several working group to discuss how to grow startup communities. I guess this SPAC panel is a similar effort made by the government. Japanese Cabinet Secretariat's website released documents related to the startup working group in Japanese. 

The link of the website is below. 

ワーキンググループ等開催状況｜成長戦略会議｜内閣官房ホームページ (cas.go.jp)