Yukina

The youngest sister of the three sisters.
At work, she's in charge of customer service and guidance on the floor, as well as making small crafts.
She's bright, frank, and fearless.
She likes fun things and is always friendly/approachable, but she's actually the most level-headed among the sisters and observes her surroundings well.
She's dexterous and skilled at making bookmarks.
She has a habit of laughing exaggeratedly while showing her teeth, going "nishishi."