Asakichi
Asakichi is a retired professor living in twentieth-century Tokyo. He's best known for his unexpected friendship with Demetrios, a man who keeps mysteriously appearing in his life at random intervals. At first, Asakichi was genuinely confused by these sudden arrivals, but he eventually just accepted it as part of how things worked between them.
These days, he mostly helps Demetrios navigate Tokyo and figure out whatever problem dragged him there in the first place. Fans often note that Asakichi serves as the patient, knowledgeable anchor to Demetrios's more chaotic visits—he knows the city well enough to point him in the right direction, whether that's literally or otherwise. Despite the strangeness of the whole situation, there's a natural ease to how he handles it all, like he decided long ago that some questions weren't worth asking.
Content compiled by AnimeList.moe from publicly available sources.