"One of these things is not like the other one." Redux

Reposting this because I'm adding one more.

Four of the most beautiful women in Japanese media, IMHO.  One is semi-retired, and the picture is of her fifteen years ago.  Each has characteristics unlike the others. Can you identify what they are? Try to keep it relatively clean.

Kuroki Meisa

Otsuka Nene

Takigawa Christel

Hasegawa Jun

So how do they differ?  Well, I like me some miscegenation.  Grrrrrrr!
- only one is 100% Japanese, whatever that means
- one's half-French
- one's a quarter Brazilian
- one's a quarter Caucasian and a quarter S.Asian

Google all you want, but to the best of my knowledge you won't find a picture of any of them more unclothed than this, more's the pity...