Morohoshi Daijirou manga
From Hokutonogun.com and HappyScans: A former professor of archaeology, Hieda Reijiro was expelled from the Japanese Archaeological Association for claiming that yokai exist. Ancient horrors come to life before our eyes as the yokai hunter wanders the land to find proof for his theory!
Morohoshi Daijirou's take on the Grimm Fairy Tales. Some are relatively straight adaptations while others have a sci-fi, horror, comedy, or mystery-twist.