Step 1 : Introduction to the question "In which country is it customary for women to give men chocolate on Valentine’s Day?"
...While women in the United States often receive chocolate on Valentine’s Day, the custom in Japan reverses the roles. Instead, it is tradition for women to present chocolates to their husbands, boyfriends, and even male coworkers. Men are not expected to reciprocate until a month later, on March 14—known as White Day—when they traditionally return the gesture with gifts often valued at three times what they received. This reciprocal practice has effectively created a two-step holiday economy, extending the season of spending and gift giving.
