Ah.We don't do White Day. I usually buy her presents and stuff and she cooks me stuff. I just got her a large bouquet of red roses and paid for her Korean food (see food thread) last week.
With my Nikkei ex (the daughter of landed immigrants from Japan), I did do White Day, but fairly simply -- a cookies-and-white chocolate bar, for example. V-Day was the bigger event but I think she enjoyed a second reason for chocolate.
So too, as it turns out, is Monika, but inviting her to a kaffeeklatsch might not be a good idea, despite her knowing a great many topics that one might discuss....Also, I'm a coffee person mainly.