Some group wanted but they were powerless and ignored.
Most Japanese became hate militarism that suppressed and exploited citizens in the war. In spite of their devotion and patience the war was ended by total destruction and Japanese citizen faced to the death by bombing and hunger.
As for most conservatives, most interest was the guarantee the Emperor’s status and they were satisfied that the new constitution guaranteed the status of the Emperor even it defines as the "Symbol". They thought the history from 1931 to 1945 was the deviation by Militarism from the right course of the modernization that Great Meiji Emperor set. They accepted new constitution as the inevitable reform.
Even militarist had accepted democratic reform because they needed the alliance with America to resist the Communism.