Garo: Makai Senki Episode 5

A metal sculptor named K?ji Kijima creates his stylized manhole cover as art, which he tries to sell. His work is rejected by the local art community, however he is able to sell them to city authorities, who use them simply as actual manhole covers. Due to its design the cover becomes a Horror gate, from which a Horror named Dark Hole manifests and possesses a young woman.