Nemureru Tsuki summary:

Akihiko, searching for answers about the early-death curse that afflicted his father, returns to the rural family seat, but when he arrives, he is faced with only more questions. What is the nature of his family's curse, and why does it strike down only male descendants? Who was the Meiji-era ghost that appears in Akihiko's visions? Above all, does his mysterious cousin Ren have the answers that he seeks? Find out in Miyamoto Kano's new Time-skip mystery, Sleeping Moon.(Taken from liquid passion)