All's Fair in Love and WarHis heart torn from the bittersweet pain of unrequited love, Wooseo turns to Jigeon for solace...and the two of them kiss?! What starts as a natural physical affinity between Ring Partners quickly becomes a comfortable routine of intimacy, and Wooseo soon realizes he might be seeing Jigeon less and less as a "stand-in" for his best friend. But all is not well in paradise... Jiseok has caught on to his brother's suspicious string pulling, dredging up complicated feelings and possessiveness. And he's not the only one seeing green-- a scorned lover from Jigeon's past has resurfaced, and he's dead set on severing his ex's new Ring connection!