Kanojo wa Q (Queen)

is a Japanese light novel series written by Chikashi Yoshida, with illustrations by Shiomiya Iruka. The series began publication on August 10, 2007 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
Aminatsu Ashiya, a beautiful blonde woman with a pure Japanese name came as a returnee. She seems to have a reason to collect a lot of money. The means was gambling. She thinks that luck is the key to gambling, and she notices Seito Kozama, the owner of incredible luck. Nirakukura Miko was becoming more cautious. A strange girl has recently been involved in the longed-for Koza. Only I can protect him! Thus, the two will face each other. Aminatsu, a genius of Ikasama who was never seen in a real casino. Miko Kurama, a genius of mathematics who values probability. Whereabouts of the game challenged by the geniuses of the game !?