Isn't It the Brother's Responsibility to Make His Sister Happy?

That year, my sister got married with her blind date. In the end, my sister lived an unhappy life. At that time, I saw my sister bursting into tears in front of me. I will never forget this scene. At that moment I was thinking, if I could be reborn, I must make my sister happy. Now that the opportunity is in front of me, I have to consider whether this will be the only opportunity I have in this life. I believe that my sister can have a tragic marriage in the past. I am too exhausted to describe it myself. It is our duty to re-create my sister's happiness!