I thought Annie and Christine were cousins in Greed Mask since Christine is Lo Hoi Pang's daughter. Roger isn't his son.
oh now I know what you were talking about. Do you mean that Roger was adopted and Christine is the real duaghter then it makes her Annie's couisin? Christine is still not her cousin becuase Christine's mom had and affair with Roger's Dad. Annie is Roger's (adopted) mom's sister's daughter. So they have no relationship bloddwide at all. If you remember the part where Annie said that Roger's dad tried to rape her then you would remember that they have no blood relations.
I had thought of Bernice Liu earlier, but I just now had the chance to post the answer. Now that you've added Patrick Tang, I'm sure Bernice is correct.