"Hyunseok said he's never seen you without your hat." Seo Jaeha, a man like the flame of a cigarette, barged into a once-peaceful world without any regard. "I wasn’t mistaken..." "......" "You’re annoyingly beautiful." With a pink hue as ticklish as the spring breeze. "I-I made a mistake..." "I hate it all. Just get out of my life already!" The love of youthful days, like an allergy of spring, and the chilling farewell that followed. At 25, Jaeha abandoned everything, his dreams, himself, and fled from the world. Though he hoped never to meet her again... "This is Seonyeong. She used to be a model who only did commercials, but now she’s stepping into acting as well...." "Seonyoung? Is that your real name?" She ran into him on the single-log bridge. Jaeha, with an unfamiliar face, shook up her world once again without permission. "Now it’s your turn to cling to me." This time, a little stronger, a little more dangerously... "Sleeping together doesn’t require being in a relationship."