Traveling Through the Skeleton, I Was Summoned by the Mage

Yu Zifeng traveled through time and became the most common skeleton in the Bone Burial Ground. But he accidentally ended up wandering around the Bone Burial Ground for hundreds of years. Until one day... 'The ancient contract has arrived! ' The bones of the sinful realm will eventually become the king! .... My name is Mu Chuyao, an ordinary necromancer. I summoned a skeleton. But this skeleton seems a bit unusual.