Weird sound at 5000rpm
 

I have a sound coming from I believe the engine. It sounds like a light rattling sound. The video posted below. I have a 2022 brozz 250 with only 800 miles. It is like a light hissing sound at around 5000 rpm and stop when I get over it. I revved in the video below. Click the link. Does anyone know what this sound could be?
https://drive.google.com/file/d/1mIyQ-8sowJrFFUshWmAKgwHa3C5ElF4D/view?usp=drivesdk

Hey guys, here is the video he's trying to upload.

https://youtu.be/FZHAVbdOYgM

It almost kind of sounds like a loose washer vibrating.

Sounds like you got a screw loose, buddy. Just sayin'...

to me that doesn't sound like anything to worry about as the bike brakes in sounds change and I think that is all that is
it could be that the valves need to be adjusted ( easier to hear at idle) but I doubt it
.....
ride it till it quits.... then you can tell real easy what's wrong by finding the part that failed ! HAHAHAHAHAH
.....
Bob....