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Mai Natsume is the protagonist of the manga BlazBlue Remix Heart and BlazBlue Variable Heart, illustrated by Sumeshi, as well as of two side-stories in BlazBlue Chronophantasma Extend and appears as a playable character in Blazblue: Central Fiction. She's voiced by Hayami Saori.
She was a classmate and friend of Noel Vermillion, Tsubaki Yayoi, Makoto Nanaya, Kajun Faycott and Shiori Kirihito during their time at the Military Academy. After leaving the academy Mai worked for Kokonoe at Sector Seven.
Mai is the vessel of the Nameless Grimoire, which allows her to read people's thoughts or memories or obtain information about objects by tasting them. Her true name is Mai Hazuki and she's the heir of the Hazuki Family, one of the twelve noble families that govern the world. Shortly prior to the events of Remix Heart, the Nameless Grimoire inadvertently fused with her body and transformed Mai from a boy into girl. She was not able to reverse the transformation and her father sent her to the Torifune Military Academy under an alias. While Mai initially wanted to return to her previous form, she eventually became female in both body and mind, came to accept her new form and now considers herself to be a woman.
Mai was given a powerful magic spear called Outseal by Kajun in Variable Heart, that she used ever since as her preferred weapon.
She has very long blue hair, purple eyes, and huge breasts.
Do not add genderswap tags to posts depicting this character, unless she's being depicted as a male or another character present in the image is genderswapped.