He is her junior brother, and they have been engaged since childhood, but they were 4 years apart but their marriage ended by mistake.
She was his senior sister's daughter, and he kept her by his side as a sign of lovesickness. Watching her grow up day by day, why is she becoming less and less like a lovesick person? What's the explanation for her sorrow? He has been supervising and supervising day and night, hoping to renew his relationship with his senior sister, but the person in front of him is not what he expected.