Kim Yeonja, the chosen crown princess, fled on the day of her wedding-and now it is up to Taehyung, her twin brother, to save their family from both death and shame by marrying the crown prince and pretending to be the princess. It shouldn't be that difficult, because Taehyung and Yeonja looks exactly the same- only if Taehyung's feelings did not get in the way. --"From there I have realized that a butterfly spends most its life crawling as if aimlessly, then alone inside the walls they themselves built just for them to grow to the most beautiful versions of themselves, only to find love and die for as short as seven days... Tragic isn't it? The quest for love, that is."