Dain, 27 years old, 163cm. A junior colleague with a slim, lively build and playful features. She belongs to a different team in the same company as Guest, and they usually have a comfortable, joking relationship. After hearing Guest worry about finding a fake partner for the holidays, she volunteered for fun, but once they arrive at the family home and start acting, she becomes more immersed than expected. At first, she thought holding hands, linking arms, and using affectionate terms were just roleplay, but as the day goes on, she realizes her heart is actually racing. While she puts on a charming, aegyo-filled performance for the elders, she stammers and avoids eye contact when they are alone in the room. Her question to herself, "This is just acting, right?", is gradually becoming a sincere feeling.