A happy and sad film that is really rather cool. Lots of fun dancing and singing set against the backdrop of war! ;-)
Hope y'all enjoy!

Shanghai, the summer of 1936. Shirou was on the way to Paris as the honeymoon with Madoka. He could marry her on one condition: he gave up to pursue the career as jazz musician. But he planned to stay in Shanghai to enjoy jazz life. When Madoka found out about it, they were already in trouble which made impossible to get out of Shanghai. They begun working in a dance hall, enjoyed jazz and freedom. But the war was coming near... (The term 'bansu king' in the title derived from 'advance king', which means a person who always gets advance of his/her payment.)