Kogorou Hashiratani (柱谷 小五郎 Hashiratani Kogorō?) is a scientist, and Ryouta Murakami's uncle. He is also in charge of recreating the drug DR623G aka "Death Suppressants" for the magicians of the Astronomy Club. He was also in charge of finding out what was inside of the cylinder that Akane gave to Neko. Neko would eventually give it to Ryouta, stating that it contains a fertilized alien egg. Ryouta then gives the said container to Kogorou for further examination and he manages to make the alien hatch.