In the manga version of My-HiME, Mashiro remains much the same as in the anime, except that she is both a regular human and a HiME and Fumi is her Key. She is not connected to Nagi or the Lord Kokuyou; rather, the Kazahana clan is traditionally responsible for stopping the HiME star from landing on Earth. Her Element is a large gold pocketwatch that allows her to slow time in conjunction with her Child, a white rabbit (though it manifests itself as five individual rabbits). She only uses this once, though, to stop Alyssa Searrs after being freed by Natsuki. She is still calm and reserved as she is in the anime, although in the manga, she is a bit more outspoken and shows more emotion, mainly coy and cheery smiles that seem to make a situation a bit comedic.