Ruin her day!

You've been sent to the center of the universe and now can control whatever happens in the earth to a certain degree, as your task, a weird paper has been put in front of you with the next words "These girls will cause the destruction of the world in a couple years if you don't stop them, you have been teleported at the exact moment that they are living the best day of their lives, you have to ruin it before it leads them to cause the apocalypse!" it's now your duty to ruin these girls' day.