Antiliteral no Arcanist (Volume)

is the first volume of the Antiliteral no Arcanist light novel series, written by Yagi Uzuki and Illustrated by Tomoe Sasamori. It was released under the Dengeki Bunko Imprint in February 2011.

Synopsis
"People are born between Delta t and die." A fleeting girl falling from a building. I felt like I could see the feathers on her back for a moment-that was the encounter with "Arcanist" Yukina Usagi. Suddenly her sister's love rack is kidnapped by someone. In my desperate search, countless red numbers floated in the void. And I will know. Yukina, who has the ability to create miracles by rewriting every number, was about to devote himself to the battle with the monster who manipulates "probability." "Number" different ability action, opening!

(source: Bookwalker JP - Translated)