Why can't girls go to the toilet for boys immediately after going to the toilet?

Japanese women, especially adolescent women, are very concerned about this.

Therefore, most women in Japan generally learn to dress up from the fifth and sixth grade of primary school.

I don't want others to see my bad side.

Toilet etiquette is that after a woman uses the bathroom (whether it is big or small), after going,

Men shouldn't go in at once. Because it will make women feel embarrassed and afraid of being asked about the smell or something.

Therefore, generally speaking, women (especially women) had better wait for a while before going in after using the bathroom.