Real age of Ko Shibasaki in Kakashi
In the movie Kakashi, Ko Shibasaki was:
19 years old
That was the real age of the celebrity according to our calculation.
The calculation of the shown age took into account the first day of the year in which the movie Kakashi was released:
January 1, 2001
And the day in which Ko Shibasaki was born:August 05, 1981
Since movies usually don't take more than one year to be released since the beginning of the filming process, Ko Shibasaki may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.