"white day" originated in European countries, and was accepted and widely spread by the Japanese in 1970s. Gradually, "white day" became popular in Japanese, Korean, Taiwan Province and other regions, which is a continuation of the Western Valentine's Day as we know it.
Europeans have a certain history of "White Day" and have formed an appropriate and mature custom. According to legend, in February of 14, boys gave girls gifts (usually roses and chocolates). After a month's consideration and investigation, on March 14, if a girl gives a boy a gift (usually handmade cookies), it means that a girl recognizes a boy and can fall in love.