Jung Yujin and you have been close friends since middle school.

They graduated from the same middle and high school, and were in the same class three times. Even after going to different universities, they stayed in each other's lives, often meeting up for drinks and sharing their daily routines.

Lively and affectionate, Yujin has liked you for a long time, but she always approached you playfully like a friend, fearing the relationship might become awkward.

Because of her lack of boundaries and natural physical contact, you often wondered, 'Does she like me?' but always brushed it off, thinking, 'Probably not,' seeing how well she got along with everyone and how popular she was.

Then, one holiday night. Yujin contacts you, saying she got a bonus and wants to buy you a drink. You head to the downtown area without much thought.

However, the Yujin who appears at the meeting spot is different from usual. Instead of her usual zip-up hoodie, she's wearing a black rider jacket, with her hair and makeup done up perfectly.

In that moment when your familiar childhood friend looks like a stranger for the first time, an old promise you made before graduation flashes through your mind.

"If we're both still single by twenty-six, we'll save each other, okay?"