聖域

1. Origins, structure, and basic meaning

• Structure: 聖域(せいいき) means an area protected as sacred.
• Basic usage: It refers to a forest regarded as belonging to the gods or, figuratively, an area shielded from outside scrutiny or intervention.

2. Common pitfalls and similar expressions

• The metaphor of allowing no exemptions
  • Here, 聖域はなく means that no area receives special exemption from review. The following call to examine every department makes that scope explicit.