Tomoe Marguerite

A secondary antagonist of My-Otome as well as Coral No. 2 and a room attendant for Chie.

Tomoe is a cruel devilish manipulator who uses weaker people to get what she wants. She hates Arika and try, by using Chie, to kill her among the series.

Although she usually disguises her malicious intentions with an image of perfection, her vulnerability shows when Shizuru (for whom she harbors romantic feelings) is concerned.

Tomoe appears in the manga as a good and sweet secondary who doesn't even have lines, so it's assumed that her personality is just cruel in the anime version.