The ninth episode of "Love Your Enemy" unfolds with Ji-hye's thoughtful intervention, as she discreetly guides Seok Ji-won's father to another room and subtly alerts the lovebirds, Yoon Ji-won and Seok Ji-won, of his presence. The following day, Seok Ji-won orchestrates a ride back with Yoon Ji-won, and the two seize the moment to share some intimate time at a nearby pit stop. Alas, their tranquility is shattered when they encounter other teachers who have coincidentally halted at the same spot, thus bringing their clandestine romance to an abrupt end.
Elsewhere, Hae-su and her circle of friends stumble upon the revelation that the newcomer, Jeong-yul, has been enrolled in their gifted class. However, tranquility turns tense as Hae-su and Jeong-yul clash, ignited by Jeong-yul's persistent disruption of the classroom ambiance.
Adding fuel to the fire, Seok Ji-won's father makes a contentious decision to reserve a vital school road exclusively for members of the golf resort, despite its crucial significance for student access to the school. Meanwhile, Yoon Ji-won, driven by her longing for Seok Ji-won, sneaks out to meet him at his residence. To her astonishment, she finds herself face-to-face with the other teachers who have also gathered there. The teachers grill the couple about their relationship, but once they depart, the Ji-wons find solace in each other's arms, drifting into a sleep that lasts until the break of dawn.
At school, Seok Ji-won attempts to rectify the morning's oversight by treating the entire school to breakfast, a gesture meant to compensate for Yoon Ji-won's missed meal. Taking heed of his assistant's advice, Seok Ji-won finally resolves to pop the question to Yoon Ji-won, marking a pivotal moment in their unfolding love story.
Elsewhere within the school's confines, compromising images of Hae-su and Dr. Hong circulated widely, prompting the vice principal to summon them for a probing interrogation regarding their relationship. Soo-ah, eavesdropping on the tense exchange, stepped in勇敢地 to shield both parties. In the midst of this, Dr. Hong finally confessed that Hae-su was his flesh and blood, a daughter he had only recently discovered a year prior and who had left him wracked with emotional turmoil ever since. Reflecting on her initial knee-jerk reaction, Soo-ah acknowledged that it might have been flawed and insensitive.
Concurrently, banners protesting against Seok Ji-won's father's contentious decision to privatize the school road sprang up, with parents actively mobilizing against the move. Gyung-hoon, scenting Yoon Jae-ho's involvement in the rally, attempted to deflect attention by unveiling the love connection between Yoon Ji-won and Seok Ji-won. Yet, Jae-ho, after witnessing the tender affection in Seok Ji-won's gaze directed at Yoon Ji-won, ultimately embraced their relationship.
Later, Seok Ji-won stood his ground resolutely, refusing to relinquish his position as school chairperson. Boldly, he announced his love for Yoon Ji-won to his enraged father and supportive mother. With plans to propose to Yoon Ji-won, he arranged a meet-up. But as she prepared to depart, a ghost from her past unexpectedly appeared, causing her to flee in a state of distress.
