Hypothetical scenario. Kpop will disappear from earth and you only had 1 day to do kpop related activities. However, you also can get 1 kpop wish granted for that day. After that kpop will be gone forever, ie. past is changed so that no kpop companies ever existed. For me, I'd just wish to spend a day alone with Yuqi in a private location so without reporters or sasaengs, etc.