Public support for Japanese Prime Minister Sanae Takaichi appears to be fraying, with two new opinion polls suggesting voters are losing patience with a leader who won a sweeping mandate in February but has since spent political capital on conservative causes instead of tackling cost-of-living pressures. Analysts said the problem was not simply that Takaichi’s honeymoon period was ending, but that she had used her commanding position to push through legislation dear to the most conservative...