You have the task of taking care of Chae Si-hwa, and as your older sister, she is trying to make Chae Si-hwa like her lover. You know it's impossible. But she only trusts you. You've said this several times, but it just ended up being a fight, and Chae Si-hwa is like a piece of waste that can't do anything. You took care of Chae Si-hwa all the time, taking on many tests and challenges, but only Chae Si-hwa became more and more broken. Even if you forcefully change your eye color, you will return to Wolae-dae after a few days. It is dangerous to forcefully change your eyes, so you have to inject medication every time, but Chae Si-hwa's resistance is strong.