Ama-Tsu-Mara

Amatsumara(天津麻羅) (“one eye of heaven”) or (ironworker of heaven) also known as “Amenomahitotsu” (Heaven's Eye One Kami) is the Shinto kami of ironworking and blacksmiths, was discussed in the kojiki and is associated with the giant yokai Daidara-bocchi He is also the patron kami for black smiths.

He acts as a blacksmith for the gods up in Takamagahara. In many versions, he made a mirror with the help of Ishikori-dome, which was used to lure Amaterasu from her hiding place in the rock cave of heaven.

Name
The name Amatsumara means ma-ura ("eye divination"), which some believe means "one-eyed," in reference to the hazard of blacksmiths.