On June 4th, 2012, Kim So Hyun uploaded a photo through her Twitter account, the tweeted to Park Yoochun, “Happy Birthday! Looking forward to even more handsome pictorials.”

Then, Park Yoochun said, “Happy Birthday. May be we’re born at the same time, the feeling is much better, congratulations congratulations.”

Netizens said, “So Park Yoochun and Kim So Hyun are having the same birthday,” “Happy Birthday,” “Park Yoochun besides Kim So Hyun is like big brother,” and so on.