Akairo / Romance: Shoujo no Saya, Shoujo no Yaiba

is the first volume of the Akairo / Romance light novel series, written by Fujiwara Yu and Illustrated by Kaya Kuramoto. It was released under the Dengeki Bunko Imprint in August 2008.

Synopsis
Eight years ago, Keisuke Kirizawa's sister disappeared. Two years ago, Yoshino Haibara's best friend also disappeared in the same way. Keisuke, who had a feeling of familiarity with Yoshino who had a similar wound to her, wants to see her old self against her still closed and manage to do something about it. However, in front of them, a foreign object lurking in the city appears. A non-human "clan" ── the daughter of the head, dead leaves. Did she bring fate or tragedy? The bizarre fantasy presented by Fujiwara Yu and Kaya Kuramoto opens here!

(source: Bookwalker JP)