I got proof from yahoo chat room Japan:1

A lady under the name "maribu_chick" confirmed my knowledge about how
japan favors little girls over little boys.

Its natural in most culture for men to treat women more gently than
other men. However, japan takes this to irrational extents. Other
cultures apply anti-male sexism mostly to adults. Japan applies it
even more to kids than adults.

In downtown Tokyo, a gang of men see a 7-year-boy and 7-year-old girl
get into a fight. Those japanese men will immediately side with the
girl and punch and sodomize the living shit outta the boy. Even if the
girl started it. The girl will sadistically laugh as the men
eviscerate the boy.

Little japanese girls are nasty monsters who love to kick their little
boys in the balls. These girls are rewardly-encouraged to do so by the
men and bigger boys.

Cold-hearted ball-busting little jap girls. Cold-hearted boy-
sodomizing jap men.