In the year 2107, wishing to solve Japan's energy problems, Kayanoya decided to become the assistant of the genius scientist he admired, Dr. Ginkaku. However, Dr. Ginkaku turns out to be a pessimistic misanthrope with O.C.D, who never actually wanted an assistant. Even worse, instead of researching urban regeneration together like he'd hoped, Kayanoya is forced to be the guinea pig for all of Ginkaku's weird sex toy inventions
Ginkaku Hakase to Marmot