Lilith ni omakase!

is a Japanese light novel series written by Kaede Asamiya, with illustrations by Riko Korie. The series began publication on June 10, 2008 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
Satan, who I serve, has a unique beauty. However, now that he has lost his original power, he looks only about ten years old. Therefore, it is my important role to help with bathing and changing clothes. The reason why Satan can't wash her hair well by herself, and the fact that she takes off her clothes roughly and immediately becomes teary, is because she has lost her power as a "demon king". Then, as he worked diligently on small wrongdoing in the city to gain the power to capture the world, he encountered a strangely worrisome boy named Aizawa.

In order to find out about Aizawa, who is rare and masculine recently, I and Satan decided to move to Aichi M6A High School as twins.