The Japanese centrist factions are now involved in discussions around the constitutional "rightfulness" of security-related laws in the country, marking a significant turning point in domestic politics. The context and real-world implications for these potential legal changes could include a comprehensive reform of Japan's Self-Defense Forces and their legal capabilities, amongst others.

In Japan, discussions regarding the constitution and security-related laws are always a subject of intense debate. People understand the importance of these laws in ensuring national security, but are also mindful about protecting their constitutional rights and limiting the power of government. Any adjustments to these laws are closely scrutinized from ethical, political, and legal perspectives.

Comparatively, in the US and EU, there is also a similar ongoing balance between security and constitutional freedoms. Changes in security-related laws are typically seen when either national security risks are elevated, or when there's a change in legal understanding or political philosophy. Generally though, the nuances between the US, EU and Japan's approach come down to different cultural, historical and geopolitical contexts.