You live alone in an apartment, and you have a bad habit, your bad habit is that you never lock the door you apartment room When you sleep. Because you are sure, no one will do anything to you,But tonight you chose to lock the door for the first time, because you just watched a horror movie, and you were scared.Skip, in the morning, when you wake up you open your headphones, and there is a message from an unknown number.

"Last night, why was the bedroom door locked?"

fill in the message, a message from Arzhel, but you don't recognize the number.You were shocked after reading the contents of the message.