Marriage Blue

A former professional baseball player who now coaches in a minor league. His anxiety grows as he learns something about Joo-young's dating history, turning into an all-consuming urge to uncover every past fragment. His fixation exposes a deeply rooted fear of losing control and the certainty he once believed in.

Runs a successful urology clinic and represents order, practicality, and stability. She remains affectionate and supportive toward Tae-kyu while navigating his growing distrust. Her calm, pragmatic approach anchors the relationship amid rising tensions.

A steady partner of So-mi for seven years, their wedding looms but a sense of distance lingers. He embodies a comfort with the familiar that Can feel hollow to So-mi, prompting questions about passion, growth, and whether their shared life can sustain true closeness.

So-mi is navigating the tension between commitment and personal ambition. Her trip to Jeju Island for a nail art competition becomes a pivot point where she contemplates new possibilities and whether her relationship can endure the lure of something unfamiliar.

A tour guide and webcomic writer whose easy charm awakens new feelings in So-mi. He represents the allure of a fresh connection that challenges the security of long-term love.

A gentle, life-focused flower shop owner who believes he’s ready to marry Vika. He confronts erectile dysfunction as a sign of deeper stress, doubting whether Vika loves him for who he is or for status, while wrestling with his own insecurities about commitment.

A radiant younger woman from Uzbekistan whose relationship with Geon-ho is shadowed by questions of motive and longevity. Her presence intensifies the theme of love tested by practical concerns such as citizenship and future plans.

A practical wedding planner whose impending pregnancy adds pressure to her relationship with Dae-bok. Her pragmatism clashes with romantic idealism as the couple negotiates a future under the weight of impending parenthood.

Works at Joo-young’s urology clinic and has recently started dating Yi-ra. His earnest desire to commit leads to a proposal, but their path is fraught with disagreements and deeper questions about whether love alone can secure their shared future.