Aria of the Beech Forest manga volume 3 features story and art by Yugiri Aika.

On the night of a super moon, Gwyn runs away after his fight with Aria but gets stuck back in his human form. Having not yet revealed his true self to Aria, he can't return home in this condition! However, Gwyn's not sure how much longer he can keep it secret—or even if he should. Can Gwyn find the courage to trust Aria with all that he is…?!