I get the disappointment; honestly, I do. It was an ambitious short series. Its primary focus was definitely on character development and interactions, rather than the plot's events. But doing such a thing can be quite tricky, especially in shorter series. It was a task that required more screentime, fewer flashback montages, a little less character background for our MC, and/or adding flashbacks into certain events in which decisions were made. If this had the chance to be a full series, it could have been a masterpiece.

There were several elements that kept reoccurring, thus implying significance - but were never explained, elaborated on, or answered. I believe this was mainly because they tried to develop Yeong Woo's background too much for what the screentime allowed.

But an explanation for the events leading up to the end are actually present in the story (spoiler potential explanations can be seen in one of my comment responses below) - they just require reading between the lines. Conversations, especially reoccurring ones, are CRUCIAL to understanding what happened (because the characters do not outright announce their decisions, nor do we see the moments in which those decisions are made - you need to know what they were thinking leading up to the decisions). For viewers who want to give this series a try, but to whom reading between the lines does not come naturally, a binge watch or re-watch may be beneficial.

But for anyone who doesn't mind a little more analysis when watching - I highly recommend this series. The actors do a great job showing the various nuances to their characters. And I believe the overarching message of dreams, hard work, and confidence is really relevant to viewers. Furthermore, ending analysis aside, its a light, short, and easy watch in which the main plot conflict doesn't feel as heavy as most series (something that I know personally can wear me out). Plus, such heavily character-driven stories, especially ones that ask you, as an audience, to understand the character in order to understand the plot, are not common to come by. It was refreshing.