The October 17 episode showed TWICE traveling to Vietnam with the MCs. When they arrived at the airport, Jung Hyung Don jokingly commented, "Make sure to check your passports. You might not be able to enter." He then took Sana's passport and checked her photo.
Stunned by the gorgeous passport image, the MCs asked, "Did you draw this??", to which Sana shyly reacted while laughing.
Check out the moment at the airport in the clip above.