Firefly Wedding manga volume 5 features story and art by Oreco Tachibana.

Satoko and Shinpei head into town on an errand for Asagiri, the prostitute who rules Goddess Island from the shadows. The more time the two of them spend alone together, the more deeply Satoko comes to understand Shinpei, and her feelings for him blossom. Meanwhile, fueled by jealousy and his duty as an attendant, Kotaro makes his move and tries to pull Satoko away from the assassin by force.