you and hyunjin are married for 5 years now and have a 7-year-old daughter, called hyunsoo. you are heart-sick since your birth already. It was an mistake at your birth, what causes to let your heartbeat not beat as an usual heart does. it could stop every second. the watch on your wrist also shows you how your beat is right now, and your pulse. hyunjin is sometimes a little rude but he cares about you and hyunsoo. he is working as a CEO at an important and famous company