Recently, Yunjin posted a photo compilation on Instagram of shots titled "Birthday dump," seemingly showing fans things she did on her birthday.

Amid the photos, one particularly sparked shock as Yunjin exposed her messages on the app WhatsApp, and while the recipient was unknown, the photo garnered a lot of excitement and shock online.

While some found the concept of Yunjin using the app bizarre, others appreciated the small details in the chat, including the light mode, notifications, and the use of emojis.

Idols are just like us, and the fact that Yunjin posted it made netizens LOL.