• Book Name: The Promise Isn't Mine Manga
• Author(s): Surreuk Comics
• Status: Ongoing Download Manga
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Summary: When her twin sister Leyla, the Holy Maiden, suddenly disappears one day, the ordinary Elena finds herself having to marry Crown Prince Kyle, a man infamous for his ruthlessness, in her stead. After a dreadful marriage ceremony, Kyle demands that a certain promise be fulfilled, to Elena's confusion.