In order to avenge his mother, the down-and-out "lazy" prince signed a contract with the "butler-style" demon on the condition of a wish. And the story of revenge against the sick brother-obsessed sister.
"In this world, if anyone can be nice to me, it's him. I don't believe anyone else."
"Xiao Chi, this country should belong to me, right? I am the first heir, right? Why did my father pass on the position of prince to you just because you are a man? Shouldn't these be mine... Xiao Chi, you have always listened to your sister, haven't you? Listen to your sister this time, okay? My sister loves you so much, but there are millions of people waiting for her. I can't abandon them for you, right? Listen to my sister and die..."
The ending is, extra he