Character Arc
Sung Na-jung is the daughter of the couple who run the Sinchon boarding house, which makes her the emotional anchor of the entire household. Sharp-tongued, fiercely loyal, and a devoted baseball fan, she grows up alongside the lodgers and treats them as brothers, confidants, and occasionally rivals. Her blunt humor masks a deep tenderness that surfaces whenever someone she loves is hurting.
Much of Na-jung's arc centers on her slowly dawning romantic feelings and the way they complicate the easy family dynamic of the boarding house. Caught between long-standing affection and the possibility of something more, she wrestles with timing, pride, and the fear of losing the comfort of what she already has. Her journey captures the bittersweet reality of falling for someone you have known for years.
By the end of the series, Na-jung has matured from a hot-headed teenager into a young woman capable of making clear-eyed choices about her future. The present-day framing reveals the outcome of her romantic path and confirms how the bonds formed in that boarding house shaped the rest of her life.
