"It's such a waste to order a whole bottle of wine for just the two of us," Sumire said to Miu one time. "We can barely finish half."

"Don't worry." Miu laughed. "The more we leave behind, the more people in the restaurant will be able to try it. The sommelier, the headwaiter, all the way down to the waiter who fills the water glasses. That way a lot of people will start to acquire a taste for good wine. Which is why leaving expensive wine is never a waste."