Lin Yue, a poor boy who just graduated, was deceived by a sinister agency and rented a legendary "haunted house". Unexpectedly, the person living in this haunted house is not a ghost, but the Demon Lord Yin Jiuyuan who was sealed here by the Righteous Way five hundred years ago. After the seal was broken, the formerly feared devil turned into a "good-for-nothing beauty" who lost all her magic power and couldn't even cook instant noodles.
A bankrupt academic master who works hard to survive, and a curious baby Demon King who knows nothing about modern society. The two people who should not have crossed paths were forced to start a frantic cohabitation life. While Lin Yue complained that Yin Jiuyuan was a "giant baby", he softly taught him how to use a mobile phone, eat hot pot, and watch short videos; Yin Jiuyuan used his own way to silently protect the only human being who was good to him.
From mutual dislike to mutual dependence, from caution to blatant preference. When the enemy from five hundred years ago came to their door, when Lin Yue unexpectedly awakened a special physique and became the target of competition between all parties, and when Yin Jiuyuan did not hesitate to break the seal to protect him... They realized that some fate was destined as early as five hundred years ago.
This is an alternative interpretation of "I support you" - you think I am raising him, but in fact he has been protecting me.