Well, anyway, don't be fooled by the title. This is a complaint, do you understand, and it's still a joyful one.
Well, here is the official version of the copy.
Unlike her sister Dias, who has a strange personality caused by being busy all day long, the younger sister Devina devotes herself to research projects all year round. Perhaps because her sister wants to become the patriarch of the family, the "second child" Devina is especially loved by her family (pseudo), which indirectly develops Devina's acquired facial paralysis and complains. Apart from these, the two sisters are quite easy to get along with. Of course, this is also inherited from their parents. A charming mother and a father next door who are white on the outside and black on the inside are the necessary conditions to form an "important" person.