Well when you think about it , all this happened at night time , depending on the season would decide as well . It does not say how cold Kyruem is but when you pet his forehead , your hand freezes which is pretty cold to instantly freeze like that . Given that the people was wearing business to everyday clothes it had to be either spring , summer or fall . Kyruem is able to learn powerful Ice type moves such as Blizzard or Ice Burn . When pressured by Corless to use his full potential in the Ice Beam , it shot out a beam that caused the air to be blistering cold , but upon impact on the ground , made everything frozen given it a layer of ice . Ice forms at 0 degrees C . At 28 degrees C , human flesh become frozen in less than 15 minutes . It can be safe to say that Kyruem full potential blast of Ice was more than 50 degrees C . So pretty much those people are dead . And its a huge city from the looks of it . And the Pokemon , the Grunts as well , if any , we are looking at maybe 200 people dead . BUT HOW THE FUCK DID Drayden survived , with no sleeves ? Meh , throwing the logic out the door . But those folks are mostly dead .