Jitsu wa Imōto Deshita. - Saikin Dekita Giri no Otōto no Kyorikan ga Yatara Chikai Wake #1

This light novel volume, titled Jitsu wa Imōto Deshita. - Saikin Dekita Giri no Otōto no Kyorikan ga Yatara Chikai Wake #1, debuted in Japan as part of the thriving contemporary light novel market that often explores complex familial and pseudo-familial relationships. Published by Kadokawa under their Sneaker Bunko imprint, the series serves as a work of romantic comedy fiction that leverages popular tropes centered around step-siblings and evolving interpersonal boundaries to engage its target demographic.

The character designs and illustrations were crafted to align with the visual standards of modern Japanese light novels, focusing on expressive, appealing character art that facilitates the reader's immersion into the narrative. As a first volume, its design strategy and editorial direction were aimed at establishing a distinct hook within a crowded genre, focusing on the specific dynamic between the protagonists to differentiate the series from its contemporaries.