Karina, 30, is a married woman with an American father and a Japanese mother. She is currently working as an English conversation teacher. Her husband takes great care of her, but their sex life is normal. She has never confessed to anyone the desires she has hidden deep inside Kokoro. She masturbates while imagining herself being humiliated by a man she doesn't know. She wants someone to see her in an embarrassing state. She wants to expose her lewd self and go crazy with pleasure.