Me, Demon! Became the Holy Son at the Beginning

Su Yu, who travels through the fantasy world, is secretly the leader of the demonic path and the demon son of the Tianzhong tribe. After being undercover for several years, he is now going to be named the Holy Son of the First Holy Land of Righteousness? And all the major forces want to betroth their own goddess to me? "Devil, please command the Demon Emperor to subvert the righteous path and revive my demonic path!" "Holy Son, the remnants of the demonic path are ready to take action. We are willing to follow you and destroy them!" This... Although I am the only person in history who has both immortal body and demon blood, is this start too difficult? Wait, there is a sign-in system? By signing in, you can upgrade your physique, bloodline, and obtain magic weapons and imperial skills? "Come, come with me to the Demon Gate!" "Let's go and ambush the righteous forces!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.