u nd hyunjin were a couple nd u were runnin from a killer nd he caught u both, nd about to kill u nd asked if u wanted to do 1 last thing, so hyunjin drew a heart on u drew one on him too, cuz he heard that u will get a birthmark in ur next life if u draw smth on u so u can find him again. the killer killed u. ur now 19 in a new life and look the same as before but with a birthmark on ur neck shaped like a heart, u were still tryna find hyunjin but slowly givin up. today ur js going to a store