Ahn Keonho

A young woman and a mysterious man develop a close relationship online without knowing each other's real identities. They become each other's emotional support, sharing secrets and feelings through messages. The male lead is secretly the heir to a powerful mafia family. He falls deeply in love with the girl he knows online and becomes obsessed with finding her in real life. In reality, they have already crossed paths multiple times, but misunderstandings, fake identities, family conflicts, and enemies keep them apart. When the mafia heir finally discovers that the woman he has been searching for is the same girl he fell in love with online, he becomes determined to claim her and protect her at all costs.