TOKYO — Miho Kubota is a superfan of Japan’s newest and first female prime minister, Sanae Takaichi. So much so that the 28-year-old recently traveled four hours to visit Takaichi’s hometown, eat a Takaichi-themed lunch, check out the 1991 Toyota Supra that Takaichi drove in her 30s, and return home with a swag bag full of Takaichi-themed souvenirs.