extreme mental training white noise ASMR | scratching blackboard with fingernails ASMR

Hello, I'm J.
This is the sound of a blackboard scratching with your fingernails.
There are two ways to use it:
So that you can study or sleep calmly while listening to this sound.
train mental faculties
Another way is to tell a friend who doesn't like it.
I hope it will help to strengthen your mental faculties.
Subscriptions & Good. Thank you all the time. :)
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I'll make it and upload it.
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