A Gentleman's Dignity

Seo Yi Soo and Kim Do Jin repeatedly cross paths in unexpected situations, deepening their connection. Meanwhile, Do Jin comes to the realization that Yi Soo may have feelings for Tae San, a friend they both know.

Yi Soo is pressured by Tae San's younger sister, Ah Ri, to falsely profess love for Do Jin in front of Tae San.

Yi Soo feigns affection for Do Jin before suddenly cutting off all communication, leaving him confused and heartbroken. Determined to move on, Do Jin resolves to continue loving her from a distance.

Jung Rok accidentally swallows his wedding ring, causing concern. Yoon inadvertently reveals his feelings for Mae Ri to Do Jin. Se Ra discovers Tae San's yearbook photo in Yi Soo's possession and realizes that Yi Soo is in love with Tae San.

Se Ra becomes suspicious of Yi Soo's growing affection for Tae San and pressures her to acknowledge her feelings.

Se Ra, driven by jealousy, confides in Tae San about Yi Soo's secret crush. Meanwhile, Do Jin unexpectedly kisses Yi Soo, complicating the dynamics between the characters.

Tae San expresses his feelings for Se Ra to Yi Soo, who in turn reveals to Do Jin her intention to date younger men. Se Ra admits to Yi Soo that she also has feelings for Tae San, while Yoon grows jealous upon repeatedly seeing Maehari with Colin.

Me Ah Ri openly declares her affection for Yoon, creating tension and discomfort between Tae San and Yoon.

Yi Soo wears the pink shoes given to her by Do Jin, bringing him joy until he interprets her words as another insincere expression of affection, leading to emotional pain and his decision to distance himself. After returning home, Yi Soo's fantasy shatters, revealing her true feelings for Do Jin.

Yi Soo pursues Do Jin in an unexpected turn of events, seeking his forgiveness.

In an attempt to balance their relationship, Do Jin devises a "one-sided love" checklist for Yi Soo to fulfill.

Tae San and Se Ra experience a major conflict that could potentially end their relationship.

The group resolves to no longer overlook Colin's presence and makes plans to return him to Japan.

Curiosity about Colin's biological father leads to confusion and tension among the group and their partners.

Jung Rok, Yoon, and Tae San try to be great uncles to Colin, but their well-meaning efforts lead to awkward and embarrassing moments for him.

Yi Soo grapples with the emotional challenges surrounding Do Jin while also adjusting to her new role as Colin's homeroom teacher.

Yi Soo makes one final emotional plea for Do Jin to come back to her, hoping to rekindle their relationship.

Yoon takes off his ring and confesses his feelings for Mae Ahri, leading to Tae San's anger and disownment of both of them, while their friends offer separate support. Meanwhile, Min Sook requests a divorce due to her ongoing distrust of Jung Rok, and Mae Ahri and Yoon go on their first official date. Do Jin impresses Yi Soo's colleagues with a dinner outing, but the evening ends awkwardly as they listen to suggestive music and their mutual attraction intensifies.

Tae San gives his blessing for Yoon and Meahri to be together on the condition that they marry, which they agree to. Meanwhile, Rok and Min Sook finalize their divorce, and Min Sook, now single, throws a bachelorette party for Meahri, which is unexpectedly crashed by the F4.

Yoon and Meari get married, while Jungrok makes an effort to reconcile with Minsook. Dojin proposes to Yisoo, and Sera faints due to her pregnancy, deciding to postpone marriage until after giving birth.