Wow is all I can say to this incredible story. I watched it all in one day, and it's honestly the saddest drama I've watched to date. I've never cried this hard for any movie or drama until I watched this. The story is powerful and moving, enough that it's so hard to not cry or feel anything. But it's inspiring, the main girl, Aya, how she stays strong for as long as she can, never giving in.

The acting is superb, especially the main characters. They did a terrific job, and it makes me wonder if they had to use eye drops or if their tears were for real.

The music went along with the story, and the main song "Only Human" by K I liked a lot after watching a few episodes. It really fits.

My rewatch value is low, because, like some other reveiwers have stated, this show is very emotional and heartbreaking.

Overall, I think this show is a must watch. Why? It's inspired by a true story, and it's very moving and inspirational, making you wonder about your own place in life. You might not cry 1 Litre of Tears while watching this drama, I didn't, but I still cried a lot, especially in the later episodes. I would say you'd have to be a stone-cold person to not even feel a thing after watching this show.