Creepypasta

Because you weren't planning to sleep any time soon, right? This is a collection of creepy stories that floats around on the Internet, also known as creepypastas. If they are real or not is up to you to believe.
Jan 20
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A déjà vu is actually a glitch in reality, and it indicates that something has just been changed. Someone or something has ceased to exist, all memories and records of their existence erased forever.

A déjà vu happens when they get into your brain, when they need to change your memories. Maybe to erase your brother from the world. You know, the brother that you never had.