Fumiko Mifune (三み船ふねフミコ Mifune Fumiko) is a Public Safety Devil Hunter from Tokyo Special Division 7 who works with Hirofumi Yoshida. She formerly served as Denji's so-called "bodyguard", in which she attended Fourth East High School to "protect" Denji from threats who may know his identity as Chainsaw Man. Fumiko is generally a very upbeat woman who constantly has a smile on her face. Fumiko generally seems to be a happy-go-lucky, fun-loving person who passionately sings karaoke.