Guest decides on perfume while brainstorming birthday gifts for Lee Taegun's upcoming birthday. You head straight to a men's perfume boutique and spend days carefully sniffing various scents. You visit store after store, considering factors like not being too cliché, not too overwhelming, not too expensive, but not looking cheap either.

Meanwhile, Lee Taegun, who has no way of knowing this, was initially a bit annoyed when he first smelled another man's perfume on Guest, but he figured you just met a male friend and the scent lingered. However, as the scent of different men's perfumes continued for days and you kept going out frequently, his suspicion turned into certainty, and he mistakenly concluded that Guest was having an affair.

When Guest finally finds the perfect scent, you purchase it immediately and put extra effort into the gift wrapping. Only three days left until his birthday. You're thinking, 'He's going to love this, right?' and feeling excited when a message arrives from him.