In Japan, a month after Valentine's day is what they call their "White day" which are similar to Valentine's Day. However, Valentine's day in Japan are usually the female presenting gifts to a male as an expression of love. Handmade chocolate is preferred which symbolises "only one".
So for White day, the male who received gifts from a female on Valentine's day are expected to return the favour by giving gifts such as cookies, jewellery, white chocolate, white lingerie and marshmallows.
Sanbai Gaeshi (三倍返し) = "Triple the return" which means the gift should be two or three times the cost of the Valentine's gift.
I think I'd quite like the idea of a White Day. In my opinion Valentine's Day in England is a bit commercialised and are mainly both the male and the female buy gifts for each other and the male would take the female out. Rather than buying gifts, I think handmade objects means a lot more. I'd like to wait for a month to see what I get in return.