I'm Already the King of the Underworld, and You're Only Now Experiencing the Supernatural Revival?

【Calamity Number: 01】 【Calamity Codename: Great Emperor of Fengdu】 【Calamity Level: World-Ending】 【Briefing One: The target normally appears to be an ordinary young man, yet possesses strength far beyond the limits of every known living creature, supernatural entity, and even world-ending calamity!】 【Briefing Two: The target may possess an unknown, special form. In that form, the target appears to be capable of communicating with figures from myth and legend (redacted here)?】 【Threat Assessment: The other nine world-ending calamities are called world-ending because they possess the power to cause world-ending disasters. Calamity 01 is classified as world-ending because that is currently the highest known calamity level!】 【Assessment: Extremely dangerous!!!】 【Note: The target may be the world's first naturally occurring calamity. Its upper limit is impossible to estimate. No weapon, including nuclear weapons, or even world-ending supernatural artifacts can inflict effective damage on the target!】 【Recommendation: Maintain the status quo. Do not approach of your own accord! Do not deliberately disturb the target! Any unauthorized attempt to make contact could trigger extremely serious consequences!!! Remember this!!!】