This just in:
The Top 3 Excellent Things about writing your book in a Japanese coffee shop are:
1. You don’t get distracted by other people’s conversations because you have no idea what the hell they’re saying.
2. You can leave all your stuff at the table to go to the bathroom because the Japanese don’t steal.
3. When you walk in and out the door, the entire staff explodes in konichiwas! and arigatos! and deep, smiley bows like you’re the customer they’ve been waiting for all their lives.