The souls of those who died suddenly by suicide or accident don't realize they're dead. Sometimes they stay put and haunt that particular place.
These spirits have lost their human senses and memories and can only keep replaying the pain and sadness of the moment they died. The pain can get so bad that they turn to humans for salvation -- or they begrudge humans their lives. At such times, they can possess humans.
Places known as "famous suicide spots" or "high-accident areas" are often to blame.
You should be careful when approaching such locations, especially on the day or at the time the death occurred. That is, if you don't want it to happen to you, too...
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