chanjin prompt (skzcode inspired) where theyre the campus sweet couple but one of them travelled back to their past life where one of them is the palace (or crown prince's) guard and the other was the assassin (both of them secretly in love for each other but in denial), and tragically the assassin die in the guard's arm, his last words: i hope we can live happily in other universe.
—and here theyre, thousands years later, showing off their love unconditionally to each other every single day without fear that their love will end tragically.