Question

although doctors had fallen in love with Hannah at first sight why did he take very long to marry her​

Answer 1

Answer:

Sadao had met Hana in America but he had waited to fall in love with her until he had made sure that she was Japanese. This was because his father would never have approved of her if she was not pure in her race.

Explanation:

My version of this answer -> Love stories at first sights are always messed up.