We Agreed to Marry the Crown Prince for My Brother, Why Did He Become the Crown Prince?

Completeshort Story, Please Be Amazed

A short story, please be amazed. It's probably like a long name. For example, "Willow on the Palace Wall", "The day I died, the young man I liked married a bride", "He fell in love with the girl in the brothel and wanted to raise her for the rest of his life", "If there were children in the forest"