Ore Meets Little Devil!

is a Japanese light novel series written by Hirowa Minemori, with illustrations by An Inugahora. The series began publication on June 10, 2011 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
Takumi, a high school boy who is too delusional, decides to sign a contract with a newcomer, Yumema Mea (and a middle 3 girl)!

Mea can't live without eating Takumi's delusion, but she hates naughty things because she's a dreamer! I want you to do it, but I don't want you to do it! And, to swing around Takumi every day. Meanwhile, hunters come from all over the world, aiming for Mea who has awakened as a demon.

The two work together to replenish and absorb delusions and try to repel them !?