Eligibility
Individuals who were previous or potential visitors to Japan from the United Kingdom (UK), the United States (US), and Australia were recruited through a website. These individuals consented to participate in our study after reading our objectives and prior to answering the questionnaire. The survey was written in English to avoid biases regarding interpretation. This study was conducted in English to avoid multilingual interpretations of the information provided and follow-up questions. When recruiting participants, we ensured that they had sufficient English ability to understand the contents of the intervention, quiz, and questionnaire. Their English level was self-reported at the time of registration. To ensure the validity of the responses to our questionnaire, the survey targeted those who were 18 years or older, could understand English, and had visited or were planning to visit Japan.