At first, the story might be slow and I admit I felt frustrated when I started it. That was one and only downside of this drama. But it started to gets interesting around episode 3 and since then I am hooked. This drama covers almost every issues out there. Mental health, suicide, violence, abuse, betrayal, disease, bully, isolation, family, friendship, love, relationship, etc. Everytime they had a book club meeting, I really enjoy it and it gives ton of life lessons. I like all the characters here but my personal favorite will be the Sim sisters. Their bond and story is really impactful and it made me cried the most in the drama. Honorable mention to Lim Hwi and Lee Jang Woo for making the drama bright and made me laugh a lot. Overall, this drama gives me warm feeling and it is my all-time favorite healing kdrama.