Every sub-story has its own significant meaning and the build-up was great with gradual progress in the casts' character developments.

I would like to commend on the 2 main casts, Lee Je Hoon (Sang Gu) and Tang Jun Sang (Geu Ru). The way they portray the characters are incredible, especially Geu Ru's character, and helps to better deliver the intended message of the storyline to the audience.

This drama has a heart-warming story plot and highly recommended to watch if you want to sob.
Watch the story unfolds [hint: to know the story behind the main casts] as I was really engaged in the last 1/2 episodes.

I feel that this drama strikes a chord with many of us as it is very relatable to our lives, teaches us to embrace deaths of our loved ones and move on. Most importantly, it reminds me to cherish my current loved ones and not have regrets in future.