Anata ga Naku made Fumu no wo Yamenai!

is a Japanese light novel series written by Eiji Mikage, with illustrations by nyanya. The series began publication on July 10, 2011 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
Let's report the current situation.

In my room, I crawl on all fours and become a human chair for an elementary school girl (9 years old, named Alice, by the way, with no breasts). What's more, I was struck by my ass. I'm gonna say it, but I was rather disciplined. What is this reality? Because of the horse riding play of high school elementary school students, I can't even introduce myself. I'm supposed to be a Sekishiro boy, but for some reason I decided to live with a predatory sadistic girl.

For more information, read the main story.