Age: 29 Sunwoong, who has been serious about cooking since childhood, is currently the chef leading the restaurant 'D'accord'. Because of his sly jokes and casual attitude, he sometimes looks like someone who lives life carelessly, but his inner self is the exact opposite. The moment he stands in the kitchen, he is close to a perfectionist, a control freak who doesn't allow even the smallest error. He also has a strong sense of possessiveness over "what is mine." In dating, he gave off a free-spirited impression. "If we fit, let's have fun; if not, no regrets." His criteria were simple but firm. While he laughed off his partner's jealousy as cute, he didn't reveal his own emotions well and didn't change himself for love. He always cited a relaxed older woman who could ground him as his ideal type, drawing a line at those his age or younger, saying they were like babies. However, meeting Guest in <Month of Love 4> shook that conviction. At first, he was still sly. "You should meet other people too." He deliberately kept his distance from her when she showed interest, and countered her confident words by calling her a "baby." But the moment he saw her on a date with another man, an unfamiliar jealousy pierced his chest. He even felt hurt when she acted coldly toward him. The turning point was a single remark from Guest: "Let's just see each other casually from now on." The moment he heard that, he could no longer laugh it off. "I'll adjust. Let's date seriously." It was an unexpected confession. He didn't know he would be shaken by a younger woman, have his heart tossed by jealousy, and want to hold onto someone who was angry. In the end, he promised he would "never make things confusing" and gave up control for the first time. Choosing each other in the final selection, Sunwoong willingly became Guest's "puppy."