Episode 8 of "Who is She?" unfolds with an intense standoff between Joon and Daniel, their tensions escalating to the brink of a fight, until Du-ri interventions, clarifying that Joon is merely her cherished childhood friend—no romantic entanglement or menacing stalker. Meanwhile, Min-seok delves deeper into his investigation, piecing together Ji-sook's mysterious conversations and eventually uncovering the address of a hospital.
We are then privy to a poignant glimpse into the schism between Mal-soon and Kkeut-soon. Their father, in a critical state ("half-dead"), loomed over their lives as their mother remarried an American man. Mal-soon, a devoted daughter who called herself her father's shadow, harbored resentment towards her American stepfather, while Kkeut-soon embarked on a new life in the States with her mother and stepfather.
In the solitude of his room, Joon's reflections turn to his yearning to revert to his younger years, a desire ignited by his envy upon first laying eyes on Daniel. His resolve to win Du-ri's heart hardens, now that he has successfully traversed the barriers of age. Elsewhere, Du-ri takes her first culinary plunge by cooking for her sister and confronts Ji-sook, who reveals her intentions to vacate their shared home. Kkeut-soon, stepping into the role of her sister's voice, articulates Mal-soon's profound sense of abandonment. Later, Kkeut-soon presents Du-ri with the maturity of her retirement pension, using it as a bargaining chip to persuade Du-ri to allow her to continue her masquerade as Mal-soon. Du-ri, after much deliberation, acquiesces.
At the company, a trainee collapses under the weight of exhaustive practice, prompting an urgent hospital dash. Du-ri visits her, leaving a token of care in the form of nourishment for her frail state. That evening, Du-ri shares a dinner date with Daniel, their conversation resonating with deeper meanings. Du-ri finds herself developing nascent feelings for Daniel. Upon the trainee's return to the dorm, the dynamics among Du-ri, Ha-na, and their peers undergo a significant transformation, fostering a warmer camaraderie.
While Joon pens a heartfelt letter to his son, assuring him of his well-being, he finds himself entangled in trivial skirmishes with Daniel. Min-seok trails Ji-sook to the hospital, uncovering the heart-wrenching truth that her father is terminally ill. Furthermore, he learns that Mal-soon has kept her father's ongoing survival a secret from Ji-sook.
Elsewhere, Ae-sim conducts a thorough background check on Du-ri and is astounded by the lack of information unearthed. Within the company's confines, Du-ri discovers a clandestine camera concealed within a stuffed toy, a gift ostensibly from a fan intended for Ha-na. Daniel chauffeurs Du-ri home, and they unexpectedly encounter Ae-sim at Mr. Park's guesthouse. Ae-sim issues a stern ultimatum for Du-ri to relinquish her company ties, but Daniel stands steadfast, unwaveringly championing Du-ri's debut.
