Tons of factory bikes have no master link. Not just Yama. My old stock shee had no link, my blaster had no link as well.
As far as you needing to see one,
DID X Ring chains have a rivet link for higher HP bikes, it does not use a c clamp. It looks just like a regular link. It takes a special DID tool to get it on and off. If you get a bike with this on it, and do not want to buy the tool, you can just cut it off. Replace it with a normal c clamp style.