Ideologue!

is a Japanese light novel series written by Juzo Shiida, with illustrations by Hagure Yuuki. The series began publication on March 10, 2015 by ASCII Media Works under their Dengeki Bunko publishing imprint.

The series won the Silver Prize in the 21st Dengeki Novel Prize.

Synopsis
"Abandon your love! All love feelings are illusions!" Snowy Christmas Eve, Shibuya full of couples. An ordinary high school student, Takasago, who was frustrated by the appearance of the city, met a girl who gave such a ridiculous speech to the crowd. "We, the Anti-Romance Youth Alliance, deny all romantic feelings!" Her identity is Kaoru Ryoke, an unobtrusive girl in the same class. Takasago, who was in tune with the speech, participated in the activities of the "Anti-Romance Youth Alliance" chaired by her, with the thought of "Explode the rear!" I'm steadily working on the "Valentine's Day Crushing Struggle" with my friends who gathered soon-!? "We will crush Valentine's Day on February 14th!" And now, that day is finally here- !!