We're Soulmates Starting From TodayBe My Soulmate; 오늘부터 천생연분

Rising stars and longtime childhood friends, "So Dakyung" and "Ji Minwoo." The scandalous open 'business relationship' is rapidly evolving to 'marriage'! But somewhere in this whole marriage, is something a little suspicious. "Before the summer you turn 29, you must succeed in marrying So Dakyung." What kind of story did he have with his old note?