Manhole Senki Aoi
マンホール戦記アオイ
A manga created through TV Asahi's "Manga Michi" program, it features manhole covers transforming into monsters. The concept comes from Aoi Koga, a voice actress known for her expertise in manhole covers. Drawing from actual designs found across Japan, the story depicts intense battles between these transformed covers. This action manga presents a unique adventure based on the creator's personal interest.