Simple love story with good story line, positive quotes & messages. However, difficult to understand why script writer choose an ending with an unreasonable breakup. If their love so deep, they can wait it out for change if career later. Sportswoman career are normally few years only. Why need to breakup? It's not like third party interference. And the story from Hee Do's present day daughter reading the diary only brings more confusions. Pointless to differ simply because a conventional happy ending not wanted. There are drama with sad endings but those are understandable eg Uncontrollably Fond & Hymn of Death.