Confused! I'm the One Who Keeps Vigil at Night, but I'm the Source of Trouble

Once upon a time, the sky was filled with stars, the moonlit night was bright, and the sun rose and the moon set as a matter of course. When the moonlight is no longer sultry, and it is forbidden to walk in the dark, and people cannot walk in the dark, someone has to come out and see it for real! Nanke, an unknown child, used a mortal body to achieve an unprecedented body of mastery of Tao! When he became the night watchman of the Ancestral Star and guarded the Ancestral Star for hundreds of years, he suddenly discovered that he was the source of the troubles in the world~ This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.