In Japan, it is only the women who give presents (mainly chocolates) to men. Japanese women are usually too shy to express their love. (Though it might not be true nowadays.) Therefore, Valentine's Day was thought to be a great opportunity to let women express their feelings. However, this is a custom that smart chocolate companies spread to boost their sales, and it has been very successful. Now the chocolate companies in Japan sell more than half of their annual sales during the week before Valentine's Day. Men are supposed to return gifts to women on a day called "White Day" (March 14th), a Japanese creation.
Happy Valentine's Day to all!!!