Ji-jun plays Kim Min-seok / Aoki Teru, a young man who lost his Japanese parents in childhood and was adopted as the heir of a Korean conglomerate. Though once seen as the successor, he falls from grace after his adoptive father's death and is cast out of the Korean family, returning to Japan after 23 years. There, he meets Dr. Kawase Momoko, who lost her father at a young age. Unbeknownst to them, they had a fleeting encounter as children, and now, drawn to each other across 23 years, they face unexpected trials. The title is a Korean proverb: any difficult task can be accomplished with persistent effort.
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