Episode 7 of "My Dearest Nemesis" kicks off with Su-jeong's thoughts drifting to Ju-yeon amidst her second rendezvous with Ji-wu. Just when the mood seems to be setting in, Ju-yeon's call interrupts, querying her whereabouts. In a twist, he arrives clad in his concert attire, barging in on Ji-wu's outfit trial. Without warning, he whisks Su-jeong into a changing room, revisiting the memory of their kiss. As an attendant attempts to enter, a panic-stricken Su-jeong bursts out, feigning a shirt adjustment, cleverly creating a diversion for Ju-yeon's escape.
Overwhelmed by her tumultuous emotions, Su-jeong cruelly rejects Ji-wu's affections. Once Ji-wu departs, Ju-yeon apologizes for not remembering their kiss but insists he harbors no regrets. This confession leaves Su-jeong utterly shaken, only to be further disrupted by Ha-jin's call, prompting her abrupt departure.
Throughout the night, Su-jeong grapples with her conflicting feelings, astonished by her burgeoning infatuation for a youthful and eccentric individual like Ju-yeon. Meanwhile, Ju-yeon too finds himself unable to shake off thoughts of her, texting her incessantly. Amused by her involuntary smiles as she reads his messages, Su-jeong chooses to ignore him.
Elsewhere, Ha-jin and her parents ponder over Su-jeong's rejection of Ji-wu. Pressured by her mother's incessant urging to date, Ha-jin inadvertently reveals her own budding romantic interest.
At work, Ju-yeon's persistent searches for Su-jeong are met with her deliberate avoidance. To clarify her thoughts, Su-jeong compiles a pros and cons list concerning a potential romance with him, but her listed cons amount to mere trivialities—his dragon tattoo and gaming addiction.
When Ju-yeon is publicly introduced as Chairwoman Ban's grandson, the revelation goes viral, capturing the admiration of Mr. Baek and the entire office. Realizing the vast disparity between their worlds, Su-jeong deletes her list, acknowledging the insurmountable obstacles in their path.
Ju-yeon finally apprehends him, yet she promptlyadministers a stark dose of reality. As his subordinate, engaging in a romance with Yongsung's heir places her job on a precarious edge, potentially leading to her dismissal. He attempts to intervene, but concedes that her logic is impeccable. Meanwhile, Shin-won finds himself incessantly preoccupied with Ha-jin. His friend attempts to arrange a rendezvous at Sulo, yet Shin-won declines, fearing it might cause Ha-jin distress. Unbeknownst to them, he has been lurking in the vicinity, observing her from afar. Similarly, Ha-jin acknowledges a longing for him.
Kwon, elated for Ju-yeon, believes he is one step closer to ascending the throne as the heir. However, this triggers another stark reminder for him: he must eventually choose between his grandmother's wishes and his affection for Su-jeong. Shin-won arrives, inebriated and heartsore, lamenting about Ha-jin. For once, Ju-yeon finds himself empathizing deeply with his pain.
At the workplace, Ju-yeon strives to maintain professionalism, yet he finds his gaze instinctively drifting towards Su-jeong. She embarks on a mysterious date, remaining tight-lipped about her companion. Inevitably, his curiosity leads him to her side, only to discover she is with her family. The Baek clan warmly embraces him, and they forge a bond as he generously foots the bill. As the evening concludes, Su-bin delivers her customary warning, cautioning him that harming Su-jeong would undeniably break Ju-yeon's heart. Ju-yeon responds solemnly, pledging that he would never shatter Su-jeong's affection.
In the meantime, his maid inadvertently reveals to the Chairwoman that Ju-yeon has forbidden her from tidying his study. Intrigued by this revelation, the Chairwoman decides to make an unannounced visit to his residence following a meeting.Concurrently, Su-jeong scolds Ju-yeon for interrupting her lunch, during which he nervously confesses his fear of his growing feelings for her. Their conversation is abruptly halted by Kwon, who informs Ju-yeon of the Chairwoman's impending visit. Panicked, Ju-yeon finds solace in Su-jeong's offer to assist him.Shinwon, Ha-jin, and Kwon attempt to divert and delay the Chairwoman, but their efforts yield little success.Once she departs, Ha-jin attempts to comfort the visibly sad Shinwon, unaware of his unrequited feelings for her. However, through a mirror, Ha-jin watches Shinwon drive away with a mixture of confusion and concern.Returning to the pressing matter, Ju-yeon and Su-jeong are still scrambling to move his belongings to her place when his grandmother arrives. As Ju-yeon greets her and opens the door to his study, Su-jeong hides.Grandmother finds the study eerily normal until she spots a family photograph - a deliberate trap set by Ju-yeon. Falling prey to his manipulation, she launches into a furious tirade about how Ju-yeon has no right to mourn his uncle and how his uncle's death is Ju-yeon's fault. She smashes the photograph and instructs Kwon to keep a closer watch on him.After they leave, Su-jeong emerges to help Ju-yeon clean up the mess. He opens up to her about his strained relationship with his grandmother and how his hobbies are the only joy left in his life. Everything he loves has been a closely guarded secret, but he can no longer conceal his feelings for Su-jeong.Lost in thought as she returns home, Su-jeong's father notices her melancholy demeanor and asks if she is upset with him. She reassures him that her sadness stems from elsewhere.As she reflects on her joyful moments with Ju-yeon, she rushes out to find him. At the fountain, she discovers him and wonders if their relationship can survive if it ever comes to light. He assures her that it can, and she confesses her feelings for him. Their tender moment culminates in a kiss, marking the end of My Dearest Nemesis Episode 7. The scene transitions to his belongings stored in her attic, where one box is ominously labeled "Black Dragon."
