The Demon Starts from the System

I, Han Yu, was originally an office worker, but due to some reasons, I traveled to ancient times and became an unknown little demon. But I am very lucky because I met the love of my life... I will protect her for the rest of my life, even if it disappears... This novel is the original creation of Thunder Dragon's Drink and Tang Yuanhao, also called Thunder Dragon's Drink. Violators will be prosecuted This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.