It seems a few of these were missed between Christmas and Valentine's Day, so I will work on filling them in.

In this costume set, the girls are dressed as the "Seven Lucky Gods" (七福神) from Japanese mythology. I'm researching who is dressed as which god.
Anzu: Jurojin, a god of longevity, health and wisdom, associated with deer and peach trees
Darjeeling: Fukurokuju, another god of longevity, wisdom, and happiness (related to Jurojin), sometimes depicted with a crane
Anchovy: Ebisu, the god of fishing (among other things)
Arisu: Daikokuten, the god of commerce, prosperity, etc. with the Miracle Mallet.