Scissors sharpening - Filing the secondary bevel.

This is a pair of left handed scissors from Daiso, the thing is from purchase the scissors is missing the secondary bevel and is almost having a knife edge profile on the blade. This led to a myth that left hand scissors doesn't cut well or even feel right when used in the wrong hand. Upon closer inspection and filing out the secondary bevel the scissors should be as good as fabric scissors in terms of sharpness. This video is a rough filing of the secondary bevel as usually it takes multiple round of trial and error to tune the scissors for optimal cutting sharpness.