Ok, so this is something that I've been curious about for a looooong time now and I've tried searching to no avail what the reason is behind this. In korean dramas, mostly, at the beginning of the episode there will be a screenshot for like 1-2 seconds max, with some sort of background and ringtone-style sounds with the number 15 displayed somewhere. Most dramas have this, there may be only like one or two that I've seen that haven't. They've been in korean dramas only. I really am curious as to what the significance of that number is. It doesn't seem like it's a random number.
