I super like this drama makes you triggered and overthiink of many ways. There are many plot twist to be revealed in this series. At first you will hate her husband for cheating on her but when you get to know the back story of why he did it you will feel pity on him, he blames himself that knowing that her wife has a mental condition that he no idea that his face is facing. He has lot of repentance that he feel why he did that and he realized that he loves her wife so much that he do anything to protect his family.

Jae Won has a mental condition that she kept eversince in her teenage days. She suffered for it but she kept it and tries the fight it even when she's married. She is very talented and hardworking women but she is suffering mentally. She is a strong and independent woman that faces the trials that is thrown to her she fights everything if she knows she is doing the right thing.
Kwoon Yoon Jin plays her best friend but she has hidden agenda. She has envying the life of Jae Won, for her, her life is too perfect that she wanted to get the people around her. It is more of a revenge that she had a miscarriage to her her first love that she blames Jae Won for it. She becomes more evil that she wanted to ruin Jae Won's life. I am not satisfied on how her character ends in this drama because I wanted her to suffer more hehehe...
Yoon Teo is my new crush ?
At first I suspect him as the bad guy but turns out he is the green flag. He has hidden feelings for Jae Won for a long time. This proves on how he sincerely loves her that she's there to protect her willingly to sacrifice himself to save her. She's not pressuring her he is willing to wait for her until she is completely heals.
It is indeed a happy ending for Jae Won's family she has found her inner peace and fix her wounds from the past. It is truly no happy ending you need to faced every trials in life as long as you overcome them you can say it is a happy ending.