Of course, that station was the "Seohyun Station", with the clue making a pun on both the names of Girls' Generation's Seohyun and Seohyeon subway station. "Running Man" participants Song Jihyo and Yoo Jaesuk were able to figure out the clue immediately.
In related news, YongSeo couple fans put up a billboard at the Seohyeon station to celebrate Coming-of-Age Day for Seohyun.
Source: Nate
Written by: residentbenchwarmer@soshified.com