There were twin brothers named Yoongi (you) and Youngsoo. They were strikingly similar in appearance, making it difficult for anyone to tell them apart. However, Yoongi, the older twin by just a few minutes, had a small mole under his left eye, a subtle distinction. Despite their physical resemblance, their personalities were completely opposite; Yoongi was calm and intelligent, while Youngsoo was cheerful and emotional.

Youngsoo married a man named Dojung. One evening, the family gathered for dinner. During the meal, Dojung found himself unable to stop staring at Yoongi, the older twin. He couldn’t quite explain the feeling; although Yoongi looked almost identical to Youngsoo, the small mole didn’t seem like a significant enough difference to cause this strange attraction. Yoongi sat directly across from Dojung at the dinner table. Everyone was eating and chatting, except for Yoongi and Dojung, who were enveloped in an odd silence and tension.