6. Hint that you want to see her again: “Can I ask you out again?”
This is a great way to let a Japanese woman know you feel something for her. “I get the sense that he’s interested,” a Japanese woman in her 20s mentioned in a comment. However, this can also be taken as an obligatory, polite remark. If you want to make up for the unsuccessful first date, set a specific date and time for the next outing as soon as you can.