Sinbuui Bam

Jin-Mong, the king of monsters and the only dragon in this otherworld. He has everything—except for the mysterious woman in his dreams. She appears in his dreams at will, stealing his lips, entwining their bodies, and sharing their passion, yet Jin-Mong yearns for her desperately, as she has not visited him for a fortnight. But one night, as white snow fell, he finally found her. A woman so wretchedly unhappy she has no desires, Han-Eul, and a man, Jin-Mong, who is willing to give her everything. Their fateful and fatal tale.

(Source: KakaoPage, translated)

Note: Includes 14 extra chapters.