Mei Hotarubi (蛍火 名 "Hotarubi Mei") appears first in the manga in volume 5 and is the Sentouki of Fearless. Mei is described as even younger than Ritsuka. She is actually a girl despite her boyish appearance and is very new to being a fighter unit so her word spells are weak. Fearless was sent by Nisei Akame to fight Soubi and Ritsuka as a distraction while Nisei went to talk to Ritsuka's mother. Mei has a crush on her Sacrifice Mimuro and hates the way Nisei treats him. She wears her long hair under a cap, because she thinks that Mimuro is attracted to boys and would like her better that way.