I love the comedy and romance of this drama. Also, the chemistry of the lead and second couple. Everyone disappointed with the ending, but not me. I'm quite satisfied with the ending.
I think the story is quite light but sometimes the adult element there is slightly just slightly unnecessary.
I like it more because of the age gap of the lead couple. It's unusual but it goes so natural. I love the relationship of the 3 sisters and also the step brothers too.
The drama went from comedy to a heartfelt one. I really like this drama.

Heartwarming story, with beautiful scene and great casts.
Everything looks so beautiful. The script is well written. I love the plot, the dialogue, the soundtrack, the setting, even the outfit. And the chemistry of the lead couple is the one I love the most. Their first meeting is quite confusing, but I love the rest of the story. The problems were solved pretty quick and satisfying.
I might not watched many j-drama before as I'm a k-drama lover, but this drama make me want to watch more of j-drama.