Sister Succubus Does Not Confess

is a Japanese light novel series written by Yoshino Origuchi, with illustrations by KeG. The series began publication on December 10, 2012 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
A small church. Many worried "things" come to Ake, an apprentice priest.

However, they are "non-human things" such as fairies and spirits such as banshee ... One day, Sylvancia, a beautiful girl who is a succubus who is troubled by Ake, visits. She is a clan of succubus who likes to corrupt priests and is good at taking off clothes and taking off clothes. The purpose of Silva is "I want to be a nun (sister)!" ── With a serious confession ...!?