1. This document outlines BioHackathon 2015 which was held in Nagasaki, Japan. 2. It provides a brief history of Nagasaki and Nagasaki University, including its origins as a trading port and the establishment of its medical school. 3. It discusses challenges in gene hunting for rare and undiagnosed diseases even with new sequencing technologies, and proposes that semantic web technologies can help address these challenges by facilitating knowledge sharing across databases.