Nal Meongneun Geon Geumjiyang!

To everyone around him, Nam Haesul is the picture of charm—strikingly handsome, effortlessly charismatic, and endlessly popular. But those who know him well know the truth: beneath that polished surface lies a famously brash, dog-like temperament that keeps most people at arm's length. Everyone, that is, except Yang Miru. For as long as she can remember, Haesul has treated her with a warmth he shows no one else—gentle, protective, and unwavering. It seems obvious to Miru that his special treatment can only mean one thing: he must have feelings for her. Convinced of this simple truth, she has never once questioned the nature of their decade-long friendship. But Miru's comfortable certainty is about to shatter. When she accidentally stumbles upon the darker, more complicated emotions Haesul has been hiding all along—a "black heart" that contradicts everything she thought she knew—the foundation of their bond begins to crack. The boy she trusted without reservation is not the open book she imagined, and the realization forces her to see their relationship in an entirely new light. As unspoken tensions rise and buried feelings surface, the delicate balance between them grows increasingly unstable. Caught between the innocence of a girl who believed too easily and the fierce, uncharted desires of a boy who has worn a mask for years, their story unfolds into a wild, unpredictable journey of growth and revelation. Will their friendship survive the weight of Haesul's hidden truths, or will the cracks prove too deep to mend?