Two male protagonists + Qiangqiang and Shuangjie HE + Marriage first, love later + solving crimes + monsters + mutual favor
Shen Yan studied hard in Hanchuang. Once he went to Beijing to take the exam, he encountered a monster in a ruined mountain and a ruined temple. The demon was injured and wanted to use him to heal his wounds. Naturally, he, a mortal, could not refuse a demon. Since then, the monster has been following him, accompanying him to take exams and solving crimes with him, until he became the young minister of Dali Temple, and he stayed with him all the time. Shen Yan then thought, let's just be a monster. If you can guard him for the rest of your life, he will accept it.
Lu Qingheng is a snake demon who has lived for a thousand years. It was Shen Yan who saved his life and gave him his name. But what made him really unable to let go was that Shen Yan tasted so delicious. Lu Qingheng doesn't know what love is or isn't, but as long as Shen Yan wants it, he will love him well.
