It is the movie that is probably originally from the http://spanking-movie.jp/.
A spankee is Chihiro and ,of course ker is Nami.
In this clips,Nami seemed to punish severely Chihiro mainly by the ruler and cane so it can be one of the most hard spanking ever in this site as far as I know.
This punishment had left Chihiro's bottom red and bruised although she was caned over her pantie.
According to this site,Chihiro herself wish to be spanked so hard.