Do your research author. In the west men give gifts to women on Valentine's day. Why would Persia know to make chocolates for Inuzuka? Wouldn't they both expect to get gifts from each other, then hilarity ensues before they realize their cultures differ? Or if Persia is adopting an Touwa tradition in consideration for Inuzuka, doesn't this now make Inuzuka look like an a****** for not doing the same? Are cultural differences between these two countries only lip service now?
Also, wouldn't the cook/maid now, at least, suspect Persia to be in a relationship with someone from Touwa? This is just a poorly conceived chapter/arc.