This series can be deceptive, as the star, Ra-Ra, is portrayed like an innocent, flighty, and naive teenager in the early episodes, making the series seem more appropriate for that age range.
There are, nevertheless, other principal characters (Jun, her admirer and ultimate boyfriend, and Dr. Cha) with much heavier emotional baggage and unrevealed pasts, who counterbalance Ra-Ra’s naïveté.
As the series progresses, however, and the characters “fill out” emotionally, the tenor of the episodes evolves into a much deeper character study, with envy, jealousy, obsession, and deepening love growing plot elements. (The “Greek Chorus” of hair-dresser-shop women provide unexpected humor.)
We are only nearing the final episodes ourselves, but the screenwriter, Ji-Young Ho, reveals herself to be a powerful creator of gripping drama, instantiated by stunning direction, cinematography, and very sensitive acting.