While enjoying the cool Yokohama night air, Viscount Akihiro Sanders Tomoe met a wild man, whose eyes burned like fire. Intrigued, he invited the young man back to his home. Nearly a hundred years ago, a spurned lover ended Tomoe's life. Madame had given him new life, but this gift was not without its limitations. Living again in Japan after an extended time abroad, Tomoe was on the prowl for a new lover. But he may have gotten more than he hoped for in young Taichi Yamagami. A young man with abnormal strength and eyes like fire, he awakened sensations within Tomoe that he had never felt before. But this young man was hiding a secret of his own. Influenced by the ebb and flow of the moon, he could be a sweet, naive intellectual, or a rough, demanding lover. Tomoe has never had a lover quite like this...what kind of man is Taichi? (Source: DMP)

Tsuki no Himitsu was published in English as Secret Moon by Digital Manga Publishing on December 16, 2008.