Monster: The Quiet Beast’S Warmth summary:

A young girl who is cursed by a black butterfly has met with all kinds of mishaps, but every time gets saved by a white butterfly. This time the curse of the black butterfly strikes once more, but along with the white butterfly that came, was unexpectedly a long haired, beautiful man with wings! “Could it be that an angel came to save me?” “No, he is not an angel! He is… a beast!”