Hello, My Twenties! — Characters & Cast

Transitions from bare survival ('I want to become an ordinary office worker') to discovering self-worth and emotional availability.

Begins as an emotionally exhausted student working endless jobs to support her hospitalized brother and mother. Following her brother's death and mother's imprisonment, she travels to China, releases her emotional armor, and secures a corporate job at an entertainment agency in Season 2.

Evolves from seeking external validation through men to rebuilding self-respect and psychological independence.

Starts as a fashion-conscious girl trying to keep her indifferent boyfriend satisfied. After surviving kidnapping and dating violence in Season 1, she navigates PTSD, panic attacks, and agoraphobia in Season 2, reclaiming her voice and agency with the support of Kwon Ho-chang.

Moves from frivolous escapism and fabulation to uncovering and reporting uncomfortable truths.

The comedic anchor obsessed with dating and alcohol whose facade cracks in Season 2 when recovering buried memories of an elementary school teacher who abused her late classmate Moon Hyo-jin, becoming a crusader for posthumous justice alongside Im Sung-min.

Moves from nihilistic self-indulgence to earning an honest living on her own terms.

A drowning accident survivor living off wealthy older sponsors who realizes the emptiness of her life after meeting the father of a deceased victim, abandoning transactional relationships to take low-wage retail work and pursue fashion design.

Evolves from passive fear of being judged into expressing true feelings, including anger and grief.

A hyper-anxious freshman carrying severe family trauma and guilt regarding her father’s death in Season 1. In Season 2, she navigates the emotional devastation of her first major breakup with Yoon Jong-yeol, experiencing jealousy and eventual acceptance.