Gong Ma Sung (Choi Jin-Hyuk) grew up in a difficult life and experienced some hardships, yet still made joy from it. He is the successor to the Sunwoo company and excels in anything to do with the cranial nerve. From his difficulties, he is respected and looked up to as a brilliant man. One day, his kindness destroys his life. Whilst trying to help a woman in trouble, he gets into an accident and life completely changes. He loses the ability to remember, his memory only limited to one day. Now, before he goes to sleep and forgets everything, he notes all events from that one day, for the next. He wakes up with no recollection of the past, and reads back on his notes to memorize.
His life changes further when he meets Joo Gi Bbeum (Song Ha-Yoon), a once popular star, who was a celebrity and entertainer loved by all. She is not as revered as she once was, having going through a horrible experience that shaped who she is in the present, ruined her confidence and destroyed her future.
They meet and the next day he remembers her. Every time he recalls a memory, he realizes that he has known her for longer than he thought and feelings surface. They fall in love, but can it last in a time when his condition gets worse every day? (Source: MyDramaList with minor adds by me)
Korean Name: 마성의 기쁨
Episodes: 16
KDrama Happy Ending Addict 
I am really liking this drama. Thanks for sharing your perspectives. You inspired me to create a kdrama list of happy ending kdramas that I’ve seen because after so many one forgets what one’s thoughts were during and after the show. I appreciate it!
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