Sachi Moribe (森部 佐茅 Moribe Sachi) is a strange red-haired maid dressed in red who serves Momiji Himehagi with great devotion. She has a habit of dancing and singing alone on a park chants for her mistress and becomes incredibly embarrassed towards any witness, to the point she will attack the victim viciously (usually Kazuhito Harumi).
The name Sachi means "help, aid" (佐) (sa) and "miscanthus reed" (茅) (chi).
Sachi's surname Moribe means "forest" (森) (mori) and "part, department, category" (部) (be).
In combat, Sachi uses her broom which hides a long blade that resembles a Naginata and it is durable enough to compete with Kirihime Natsuno's Hasajiro.
Although the two clash with certain recurrence, their battle is always interrupted.