Japanese government have been trying for years to stoke inflation. Now they are surprised when prices go up fast than wages.
The currency is on a slow grind to zero as they continue to print money to infinity, and they can't stop it because if they raise rates everyone will see they've been swimming naked for a long time.
It would be good if they at least pretended to try doing something to fix it. The only way out is increasing productivity (and that's a long road). Instead they just want to continue papering over the issues to stay in power.