The most significant cultural differences are often the smallest things. Something as simple as a greeting can reveal ideas and societal behaviors that are worlds apart. Ikoku Meiro no Croisée, an adorable short anime about a little Japanese girl “lost” in the city of Paris, does a nice job of highlighting some of these details of life. 
A kiss on the cheeks from Alice sends Yune into a fluster. The kiss is a small social gesture to indicate friendliness. For Alice, this is a common form of greeting. For Yune, however, the kiss is a surprising breach of her intimate space. And it shows on her troubled, panicked, blushing face. When Yune finally realizes the social meanings behind cheek kissing, she wonders about her place in the ironwork shop, and in a broader sense, where she lies in Paris.
I imagine it must be pretty difficult for Yune to adjust to this new world. The cultural differences go beyond just the fashion, or the food, or the locals—those are the fun, easy aspects.  On the other hand, behavioral expectations and nuances in social interactions are much harder to grasp. Alice’s greeting is the cherry on top of a culmination of experiences that may seem strange, and possibly even offensive, to Yune’s own cultural sense.
I found this little kiss especially memorable because of some loose parallels to my recent experiences. I have been in Taiwan for about five months now, which is longer than any of my other stays here since I left over a decade ago. The social attitudes, relationship maturities, and even some general behaviors are all just a bit unlike what I am used to.
While rarely is there anything so pronounced as Alice’s cheek kiss—the cultural clashes are a little subtler than that—I am still reminded of how someone described me a few months ago. In her accented English, she said I was very “aggressive.” She had further thought that quality stemmed from a fundamental difference in our cultural attitudes and approaches (though I am not sure that culture entirely accounts for this.) In her eyes, I am the super sexual, aggressive American, who loves to push past personal physical boundaries.
So when I saw Alice giving Yune that kiss, I smiled. What seems so natural to Alice may actually be a forceful sexual advance to Yune.
- AJtheFourth talks a little bit about another slice of those details, baths—
Finding an Oasis in a Foreign Labyrinth: Japanese Bathing Culture in Ikoku Meiro no Croisée.
- More on the fashion spot in Ikoku Meiro no Croisée and culture—
Paris Haute Croisée: Culture Fascination and Identity in Ikoku Meiro no Croisée.