Raehwan on Sunday posted the photo above of him with Im Siwan at a broadcasting company on Big Star's official me2day.
In the photo, both are seen smiling warmly into the camera showing off their pretty boy looks.
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The two were acquainted with each other through producer Brave Brothers who produced both group's songs.
Internet users who saw the photo commented, "Looks like the two flower boys have met," and "They're like two princes."
In related news, Big Star is promoting their debut song "Hot Boy" and ZE:A is promoting their song "Aftermath."