I don't think you will regret watching because the ending could be better. It's about love, friendship, dreams, hardtimes, all of that with a energetic and endearing development. But we need to talk about the last episode. *Spoilers* They DID not show back yi jin, they did not show about the father of na hee do daughter's and na hee do loses some personality. Na hee was always strong and stand for her believes, but the end does not shows that. It's like she is someone else. And the part way before that, when she "forgot" about the amazing summer trip, no way. Na hee do would never forget. But in the end, she remembers. It supposed to be poetic? Because to me sounds more like she is not endearing anymore and no longer strong with her thoughts. It's not about growing up, she changed and I wonder why... Because of the brokeup? Really? They even clarify things and hug each other. I don't buy it. And it was a lack of consideration with back yi jin, we just get a post credit scene a little bit empty and it doesn't show the actor. Anyways, they did not need to get together, however it was not great ending.