Mana Takamiya

One of the Wizards of DEM (Deus Ex Machina), an organization which provides realizer units to other wizards throughout the world to fend off spirits. When DEM was transferred to Tenguu City’s AST, she was posted on that spot to deal with the Spirit called Nightmare. Mana doesn’t recall much of her past and it is said that she’s one of the best wizards existing.

Ratatoskr (Currently)

In Volume 3 it is revealed that Mana is Shidou’s blood-related sister; though she can’t recall much of her past 5 years ago. She has a photo of her and Shidou that reveals that Shidou is her brother. Even though Mana is one of the best wizards existing, DEM has been experimenting on her body via tests and drugs; making her capable of using other tools meant to kill Spirits. It takes a side effect on her body which greatly shortened her lifespan, but she herself doesn’t know it.

Mana is famous as being the only one so far who has been actually able to kill a Spirit, although the Spirit Kurumi always reappears, even after being killed by her several times. It was later revealed that the Kurumi’s that Mana repeatedly kills are actually clones that were made by the real Kurumi, who doesn’t even take Mana seriously.

In Volume 4 she was taken into Ratatosk for custody; in Volume 5 she joins Ratatosk and knows what DEM did to her body.

In Volume 6 she stopped brainwashed Kotori and Fraxinus crews going rampage and borrowed Ratatosk’s CR Unit “Vánagandr” to help Shido. She aids Origami in Volume 7 and defeats DEM witch Jessica who went berserk.

In Volume 8, she refused to take Kotori’s advice to recuperate, and leaves Fraxinus to trace down Kurumi. Her current whereabouts are unknown.