Definitely something wrong. That noise is not normal. Is it coming from inside the clutch cover? Sounds like something hitting the inside of the case as it spins. Are those scrape marks on the right side frame? Could the bike have been dropped, previous owner replaced the clutch cover, but something not right inside?
If it does sound like coming from behind the clutch cover, lean the the bike on something tilted as far over left as you can (so oil won’t leak) and remove the cover to see how it looks inside.
Engine noises are hard to pinpoint where they’re coming from as sound travels through other parts. An old trick is to use a longer standard screwdriver, put the handle in your ear and touch the blade to the case, just like a stethoscope (if you don’t have the real thing!)