I enjoyed this short series (8 eps). It doesn't have an unusual plot: high school best friends have a misunderstanding causing a 10-year rift. But we get flashbacks to their high school days and how they got to know each other and became close.

In the present, Achi wants to renew their friendship but he when he starts talking about the past, Ji doesn't want to talk about it. It's clearly something big, at least for Ji. That kept me hooked and I wanted to know what happened between them. In the meantime, Achi is bringing Ji meals at home and at the hospital, really taking care of him. It was so sweet. They exchange post-it notes, like they used to. So many sweet, small things that tugged on Ji's heart (and on mine). Even before Achi showed up at the airport, Ji was already following him online. I was rooting for them the whole time I was watching.
I loved Ji's parents together and individually. How Ji's Dad was able to pull himself together for his sons' sake, I was just so happy for them.