>>937045666
Asuna and Karin have Japanese surnames so one is likely mixed with black and the other is mixed with white.
Or Asuna, since she has a Japanese first name and last name can also be full Japanese, but a Yanki.
Yankis dye their hair blonde and wear blue contacts for that American aesthetics.
Yanki often gets translated into delinquent when a Japanese character has dyed their hair blonde in dub anime.
Gyarus dye their hair blonde too plus they tan their skin.