This was a fine episode. I'm actually liking their hesitation. Usually I find it more or less annoying in series. Yamada is so weird with her contradictory personality.

The two sisters form an interesting yet classic pair of desiring and lacking what the other has. Although naturally Yamada will most likely drop the idea of having 100 guys and stick to Kossu (Kossu is a nickname for the most popular vodka brand in Finland, btw).