Maze (OVA): Female Maze

Also known as Mei Ikaruga, she's the protagonist and the female counterpart of Male Maze, also known as, Akira Ikaruga, who was her perverted older brother who loves to fight. During her time in the real world, she accidentally saved the life of Princess Mil when her house fell on Mil's so-called murderer upon falling into an fantasy world. Afterwards, she became extremely protective of Mill, who often shows intimate feelings or sexual advances toward Maze. She had incredible powerful magic abilities but they can be used at her male counterpart. During the day, she is her normal self but at night, she changed into Akira due to a potion Mei drank causing her to seal her magic which cause the transformation to have ugly results and temporarily results in Male Maze's personality controlling the female form and powers. She and Akira also pilots Dulgar, an most powerful Demi-Armour created by Mil herself, which to me, looked like an demonic version of the combined Rune God from Rayearth.