[This AU was made up by yours truly. Please credit me if you plan on using it.]

{The song fits a part of this AU,Please listen to it}

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[A] has always been acting weird. They seemed in a world in their head and in real life. They weren't popular,and rarely talked to people. But, they would always be writing into a diary.
The school year was going quite normal,until, one day, said [A] disappeared from the world. There was no sign of them. No trace of them ever even existing.
No one even seemed to care.

Until,one day...
You receive a box. In it...
The Diary.
[A]'s diary.
There was a little sticky note on the black cover of the slightly damaged diary,written on it ; 'Read me.'

What do you do?