In Japan, the common sense for Christmas season is only December 24th & 25th.
We greet “Merry Christmas!” each other on only Dec 24th & 25th, therefore the items about Christmas would be discounted since December 26th.
Well, as for this year;s Christmas season, I’ve bought a pack of chicken which was flavored with some spices. As far as I know, for these years the main menu of Christmas by Japanese people is chicken, not turkey. Therefore I bought chicken, too.

This package was consists of 3 pieces of chicken legs actually, the selling price was 1,600JPY(about 15.5USD) originally. However, I bought this one in the late timing of night on December 25th, therefore this price was discounted to 800JPY, i.e. it was 50% discount.
Then, does someone think that eating chicken and cake as the particular menu for Christmas night?