テツ

A man came from the main island to investigate the demon that tells the future. Being an old friend of Nagi's husband, he also has a bit of knowledge about the demons.Tetsu prepared a variety of materials and tools for the purpose of challenging the demon himself, but Kyouko, who provided him accommodation, found out that they are all useless afterward.A gentle and strong man, dislike being called "old man". He also helped out as an engineer during his time in Haikyo.