In a one-night stay series at a college student's home, the Kansai-born housewife Mika makes a comeback. This time, her partner is a black man studying in Japan. Despite the language barrier, her natural cheerfulness and charm help them become intimate, but she is astonished when she sees his penis. Mika, bewildered by the unprecedented size she has never seen before, gradually loses her rationality as she experiences a pleasure like never before, once again removing the condom and committing the forbidden act...