The plot was an interesting concept, similar to that of shows like Erased and Tokyo Revengers. However, it was fairly predictable even the killer was really predictable. The acting needed some fine tuning it almost felt too forced and lifeless, especially the laughs. The chemistry between the characters was good though. I probably wouldn't recommend this show to an experienced k drama watcher, it's an okay start for beginners. Ending was satisfying for those who like happy and predictable endings which I don't mind too much. Overall the acting was a little flat, the plot too predictable for me, and I would recommend shows like Erased and Tokyo Revengers more so than this one.