An and Yuka are good friends who work at the same company. When An was drunk and vomiting at a drinking party... she was seen by a handsome guy she didn't know! She ran away from the party and unexpectedly met him again at the company the next day! What is the ending of the "inconspicuous four-corner relationship" that kicked off? A slightly H, sour and sweet "heart-pounding" love story woven by four adult men and women!