Wandering Island manga volume 2 features story and art by Kenji Tsuruta.

Mikura Amelia, following her clues and research, sets her floatplane down in the Pacific, waiting for the drifting passage of Electric Island. No sooner does it appear than her GPS goes out…so where is she, and the island, headed? The sun-baked maze of streets and buildings that make up Electric Island is curious and charming…which is more than can be said for its sullen inhabitants who will barely communicate with Mikura. Did they fall prey to the same enigma that drew Mikura here…and will she recognize the people from her past when she finds them…?