Summary:

Sophie believes that her life is full of misery. Everyday, she returns to her impoverished home to perform all her duties. Even though she meets all the requirements of a “perfect” daughter, she is disappointed when her mother doesn’t acknowledge her. When she meets Hyu, the richest student in school, the two teenagers tweak their perspectives of the world to fall into a happiness world and a misery world. Neither can stand the world they currently live in.
Their plan sort of works: They are separated into different worlds. But when they face a necromancer, endless training, and deaths of their loved ones, will changing their perspectives take them back home?