Horobi no Kisetsu ni 'Hana' to 'Kemono' wa

is a Japanese light novel series by Atarashi Yasumi, with illustrations by Fly. The first novel was released on February 10, 2018, and is published by ASCII Media Works under their Dengeki Bunko imprint.

Synopsis
Suragaya, a city of flowers that prospers after overcoming many destructions. There, it was stipulated that people would equally live as slaves and serve the miraculous manipulator, the Great Beast. The love story blossoms in one winter when the battle with the steel bugs that stalk the city-Tenko continues.

A beautiful beast that has a tradition of devouring humans and lives in the ruins of the suburbs while being afraid of people, "Gluttony".

Croix, an innocent girl who has stopped growing as a young girl due to the "silver crest" engraved on her whole body and has not been sold in the slave market.

The relationship between the two, who happened to be tied up from a lie, is awkwardly nurtured under one roof, but with a certain affection. My beloved days eventually caused a miracle on the battlefield ...