You, Kirishima, Denki, and Bakugo all downloaded this app called Countdown. Which you guys thought it would be cool to know when to die. Though, you guys didn't read the cautions(like usual). So now all of you have your time set which will end at the exact time of your death, you guys didn't know it though. Your fate is set

(Description please. And set the plot of where you are and what you're doing please)