If you're looking for manga similar to Cthulhu Shinwa no Maboroshi: Yume Sakai Michinaru Kadath wo Yume ni Motomete, you might like these titles.
January 25, 1931: an expedition team arrives at a campsite in Antarctica...to find its crew of men and sled dogs strewn and dead. Some are hideously mangled, as if in rage--some have been dissected in a curious and cold-blooded manner. Some are missing. But a still more horrific sight is the star-shaped mound of snow nearby...for under its five points is a grave--and what lies beneath is not human!
The narrator is a student on an antiquarian tour of New England. He sees a piece of exotic jewelry in a museum, and learns that its source is the nearby decrepit seaport of Innsmouth. He travels to Innsmouth and observes disturbing events and people.
The novel, set in 1928, describes how Charles Dexter Ward becomes obsessed with his distant ancestor, Joseph Curwen, an alleged wizard with unsavory habits. Ward physically resembles Curwen, and attempts to duplicate his ancestor's Qabalistic and alchemical feats.