Minagi, Mikoto

美袋命

A middle school student of dubious origin who was rescued from the sea by a passing ferry. She is very attached to Mai, although her reason for attending Fuuka Academy is to look for her brother.
Her Element is a large jet-black claymore named Miroku, which answers her call whenever she is not near it. Miroku has several special abilities, including the power to slice through nearly any object, such as cruise ships, without needing to be physically swung, and the ability to summon energy blasts. When it uses these powers, glowing red eye-shaped markings appear on the blade. It is initially assumed that the sword itself is her Child, but her Child is later revealed to be a monstrous ogre-like creature that wields a gigantic spiked club; this creature also bears the name Miroku. This Child is called the protector of the Obsidian Lord and apparently seems to be under his control rather than Mikoto's (this is shown when Miroku made a vain attempt to stop Kagutsuchi's attack from destroying the Obsidian Lord).
Mikoto during the first few episodes behaves as though she was raised by cats (In My-Otome she is referred to as the "Cat Goddess").