Youkai hanter

comic serise by Moroboshi Daijirou.
since 1978.

The hero Hieda Reijirou is a heretical scholar of myth and monsters. Allmost all cases he had taken up had to do with the secret of the Creation. Dark Mythos, the background of the series, is compared with Lovecraft's Cthulhu Mythos.

cover of "Youkai hunter, chi-no-maki",
published by Shuueisha, Tokyo, 2005

Hiruko: Youkai Hunter (HIRUKO THE GOBLIN)