Revenge System
Kalina's POV
I… Have a very happy family.
My father has a good job, my mother loves me very much, and I have a younger sister who is two years younger than me, who works very hard and often does housework for me. I must feel that life is very happy.
However, sadly, I don't feel happy. I am the eldest child in the family, the person everyone cares about the most, but all I see is suffering. Strange, where have all my happy cells gone?