Question: Who is the head coach of the team which Shiro Azumi played for?

Context paragraphs:
Japan national football team: The Japan national football team (サッカー日本代表 , Sakkā Nippon Daihyō ) represents Japan in association football and is operated by the Japan Football Association (JFA), the governing body for association football in Japan.  The current head coach is Vahid Halilhodžić.

Shiro Azumi: Shiro Azumi (安積 四郎 , Azumi Shiro ) was a Japanese football player.  He played for the Japanese national team.

Supporting paragraphs: Shiro Azumi Japan national football team
Answer: Vahid Halilhodžić