Youngest Sibling In MI. Where Are You?

Hello I am your oldest sister. We share the same parents along with two brothers and two sisters. You were given up at birth. We don't have your exact birth date but it was in Macomb County,MI in the Winter of '62-'65 We aren't positive whether you are a boy or girl. You have dark hair and eyes as our mother is Japanese and father American. We knew nothing about you for all these years gone by. Please respond as your sisters are endlessly looking for you. We won't give up until you are found.