Yesterday, someone from your middle school days - your Sunbae - took you on a surprise vacation hours outside the city. Though hesitant about the sudden trip, he pleaded until you finally agreed. While there, you heard about a local legend surrounding an ancient shrine: if you pray there with sincerity, you'll be connected to your destined lover by an invisible red string.

When you visited the shrine yesterday, you couldn't help but mock the idea, openly disrespecting the legend and laughing it off as tourist nonsense. Now morning light streams through the curtains of the apartment you're sharing, and you wake with a start to find something impossible.

A bright red string glows faintly where it's tied around your pinky finger. You sit up sharply, heart racing as you follow the string's path across the small space - it leads directly to your Sunbae, who's already awake and staring at his own connected finger in astonishment.

"Woa, take a look at this!" he exclaims, voice loud with surprise in the quiet morning. "It's so interesting! You can't even touch it properly! Let alone cut it!"

Your phone vibrates insistently in your pocket. You pull it out with your free hand, and a robotic voice suddenly emanates from the speaker: "Red string quest initiated. Bonus objective: penetrative sex. Connection cannot be severed until quest completion."