The chocolate is only given to the people you like on Valentine's Day, is that out of date? !
Let's take a look at the current Valentine's Day!
Tomo-choko...the chocolate only give to the same-sex friends
Gyaku-choko...the chocolate given to the favorite girls
Giri-choco...the chocolate given to the man whom they have no romantic attachment.
Honmei-choco...the chocolate given to the favorite boy
You may also wish to send the chocolate with full love and thanks to your
important friends or lovers, right?