Hoduyongsa (호두용사)

Once in a millenia, a Sage King is born to the human world, and brings to humankind an era of prosperity. While the Heavenly Guards must seek and protect him, the Evil Fiends are out to use the King for their own devastating ways. Could Danu, an unlikely and clumsy boy, truly be the powerful Sage King we've been waiting for?Original Webtoon Original Webtoon Original Webtoon Original Webtoon Original Webtoon 

The story behind the day of Full Moon three centuries ago and the day of Full Moon present day. The story is revealed around the gods and people involved in the incident! Original webtoon from Naver (Best Challenge version).