The drama started out very promising, the first couple of episodes had set the premise between the two leads very well. However I think that what broke this drama was that it took too long to get to the romance with all the filler scenes, and it never addressed the plot and overarching idea of the tree adequately.

STORY:
7-8 episodes in and they have completely forgotten about the tree. The drama also spent too long developing Second Male Lead that by mid way through the drama, you are asking yourself, why is Oh Soo even there? I don't understand the point or the plot for male SL. They could've taken out all those pointless filler scenes of male SL wooing Yoo Ri and replaced it with more development of the ACTUAL plot, i.e. the tree. The romance between Yoo Ri and Oh Soo took way, way too long to get to. The script spent too much time trying to give us second lead syndrome, that they completely forgot about first lead.

Also, it seems like half the drama was written by one writer, and the other half was written by another writer. Feels as if both writers had no communication between the two as first half felt completely disjointed from second half. things happen because 'reasons' and people left because 'reasons' but those 'reasons' was never properly addressed or explained. Felt like a complete waste of time.

ACTING/CAST:
Even the good acting and cast couldn't save the plot. I really enjoyed the bromance between the two brothers, it was extremely refreshing to see a healthy sibling a relationship where one isn't trying to overthrow the other. I also liked the chemistry between the two main leads. I love Kim So Eun. Her and the male lead are really adorable together.

OVERALL:
I would not rewatch this, nor would I recommend it. don't waste your time. the ending will only leave you with more questions and confusion.