I think I have found my favorite k-drama so far, it will most likely enter my top 5 and will stay there. I have so many things to say about Twinkling Watermelon, it combines precisely many of the things that I like and love to see in kdramas (music, youthful plots, romance, comedy, heart touching, lovely characters, time travel and more).
This story so beautifully uses the element of music as an escape and as a form of genuine expression, it shows how difficult it is to grow up and how traumas and dysfunctional families affect our lives, it also portrays how beautiful it is to have a family and I'm not just talking about the one we are related to by blood. Likewise, it portrays youthful romance in such a charming way. Without a doubt, there are too many things that I highlight about this wonderful k-drama, which is worth watching, so I will mention a few:

- I loved the way the story is constructed, from the beginning it is intriguing and makes you want to continue watching chapters even if you need to sleep early, time traveling plot has caught my attention lately and I thought its execution was perfect in Twinkling Watermelon.
- I found the story very moving, it made me put myself in the shoes of all the characters, in the past and present. It made me cry so many times and also think about so many things, especially about my parents life.
- Each character is necessary and adds to the story, I loved the relationship of the boys in the band and I loved each one of them, seeing their interactions and how with the small intervention of Eun Gyeol they managed to build such a beautiful friendship and brotherhood made me want have friends like them.
- The comedy is so good and gives it a special touch. It made me laugh even when I had just cried because something touching had happened.
- I found the romance between the two couples cute, without being rushed and just how love arises in adolescence. (It also made me cry wishing someone loved me in such a way).
- YiChan's character is so cool, lovely, and funny and with Eun Gyeol, his dearly son, they make the perfect duo. I definitely love both of them.

I could go on saying many more things, but my final opinion is that this drama is very heart touching, with a well-constructed story, with characters very well created and executed by the actors exceptionally (I applaud the cast), and without a doubt with many lessons. In life there are many things that are out of our control and no matter how much we try to avoid them, they will happen, but we can always take advantage and overcome adversity, youth is a charming and very painful stage but those friends that we make genuinely and the family we created it can make it easier. I would recommend this drama without hesitation. I loved it from beginning to end and if I see her again I know I will feel the same. (Although I would have liked to see a little more of the new future and how things happened, especially Eunyu's future). No matter what, in my opinion it's a solid 10.