A new promotion has been announced Godzilla Vs. Valentine coming to the Shinjuku Marui Annex (cafe). It will feature special menu items, as well as special merchandise. This is not the first Godzilla Valentines promo, it has been done for a number of years. Some of the items that will be available will be a t-shirt, phone case, and of course chocolates, some maybe available at pop-up shops. There are also special sake cups that will be available (it is unclear if they are part of the promo), more details are to come.
Update: the sake cups are available from the Godzilla Store for 682 yen (approx $6 US), there's 11 designs in total.