Yo man, just be real and keep it real. There's no need for theory, even though you see patterns. When you see an attractive korean/japanese woman, don't let the prejudice flood your mind. Instead, just approach her and say "hey" or whatever the method of conversation works for you Women are humans too, they are not goddesses. There are FAR MORE women than men, so take your chances and don't be afraid of rejection. If you are, you will be burdened with regret. You live only once man, so take your chances. It's a win-win situation, you get experience and practice regardless. Then it will become second nature to you and you can talk to any type of women you want.